Remove redundant #nullable enable directives

[JamieMagee]

This PR includes 3 classes of changes:

• Removing #nullable enable directives from file
  • Nullable references types were globally enabled in enable nullable by default  #1471
• Removing #nullable disable directives from enums
  • Enums cannot be null
• Removing #nullable disable directives from telemetry records
  • This was the first small code change

[codecov]

Codecov Report

❌ Patch coverage is 57.95455% with 37 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.2%. Comparing base (3b0671c) to head (48fdb69).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
.../Telemetry/Records/BcdeExecutionTelemetryRecord.cs	0.0%	6 Missing ⚠️
...ords/LinuxContainerDetectorImageDetectionFailed.cs	0.0%	4 Missing ⚠️
.../DockerServiceImageExistsLocallyTelemetryRecord.cs	0.0%	3 Missing ⚠️
...mmon/Telemetry/Records/GoReplaceTelemetryRecord.cs	0.0%	3 Missing ⚠️
...ry/Records/LinuxContainerDetectorMissingVersion.cs	0.0%	3 Missing ⚠️
...metry/Records/NuGetProjectAssetsTelemetryRecord.cs	0.0%	3 Missing ⚠️
...mmon/Telemetry/Records/RustGraphTelemetryRecord.cs	25.0%	3 Missing ⚠️
...Common/Telemetry/Records/GoGraphTelemetryRecord.cs	50.0%	2 Missing ⚠️
...ry/Records/LinuxContainerDetectorLayerAwareness.cs	33.3%	2 Missing ⚠️
...ry/Records/PypiMaxRetriesReachedTelemetryRecord.cs	0.0%	2 Missing ⚠️
... and 6 more

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #1543   +/-   ##
=====================================
  Coverage   90.2%   90.2%           
=====================================
  Files        423     423           
  Lines      35452   35452           
  Branches    2207    2207           
=====================================
+ Hits       31996   31997    +1     
  Misses      3001    3001           
+ Partials     455     454    -1     

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[Copilot]

Pull Request Overview

This PR removes redundant nullable directives now that nullable reference types are enabled project-wide via Directory.Build.props. The changes improve code consistency and reduce unnecessary boilerplate.

• Removes #nullable enable directives from files where the project-level setting makes them redundant
• Removes #nullable disable directives from enum types that don't require nullable context
• Removes #nullable disable directives from telemetry record classes and adds appropriate nullable annotations (?) to string and array properties

Reviewed Changes

Copilot reviewed 50 out of 50 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
YarnBerryLockfileEntry.cs	Removed redundant #nullable enable
UvSource.cs, UvPackage.cs, UvLockComponentDetector.cs, UvLock.cs, UvDependency.cs	Removed redundant #nullable enable from UV detector files
PackageLockV3Package.cs, PackageLockV3.cs, PackageLockV2Package.cs, PackageLockV2Dependency.cs, PackageLockV2.cs, PackageLockV1Dependency.cs, PackageLockV1.cs	Removed redundant #nullable enable from NPM contract files
DotNetComponentDetector.cs	Removed redundant #nullable enable
ComponentType.cs, ProcessingResultCode.cs, DetectorClass.cs, DependencyScope.cs	Removed unnecessary #nullable disable from enum files
RustGraphTelemetryRecord.cs, RustDetectionTelemetryRecord.cs, RustCrateDetectorTelemetryRecord.cs	Removed #nullable disable and added nullable annotations to string properties
PypiRetryTelemetryRecord.cs, PypiMaxRetriesReachedTelemetryRecord.cs, PypiFailureTelemetryRecord.cs	Removed #nullable disable and added nullable annotations to string/array properties
PipReportTypeTelemetryRecord.cs, PipReportSkipTelemetryRecord.cs, PipReportFailureTelemetryRecord.cs	Removed #nullable disable and added nullable annotations to string properties
NuGetProjectAssetsTelemetryRecord.cs	Removed #nullable disable and added nullable annotations to string properties
LoadComponentDetectorsTelemetryRecord.cs	Removed #nullable disable and added nullable annotation to string property
LinuxScannerTelemetryRecord.cs, LinuxScannerSyftTelemetryRecord.cs	Removed #nullable disable and added nullable annotations to string properties
LinuxContainerDetector*.cs	Removed #nullable disable and added nullable annotations to string/array properties across multiple Linux container detector telemetry files
InvalidParseVersionTelemetryRecord.cs	Removed #nullable disable and added nullable annotations to string properties
GoReplaceTelemetryRecord.cs, GoGraphTelemetryRecord.cs	Removed #nullable disable and added nullable annotations to string properties
FailedParsingFileRecord.cs	Removed #nullable disable and added nullable annotations to string properties
DockerService*.cs	Removed #nullable disable and added nullable annotations to string properties across multiple Docker service telemetry files
DetectorExecutionTelemetryRecord.cs	Removed #nullable disable and added nullable annotations to string properties
DetectedComponentScopeRecord.cs	Removed #nullable disable (no other changes as properties already correct)
DependencyGraphTranslationRecord.cs	Removed #nullable disable and added nullable annotation to string property
CommandLineInvocationTelemetryRecord.cs	Removed #nullable disable and added nullable annotations to string properties
BcdeExecutionTelemetryRecord.cs	Removed #nullable disable and added nullable annotations to string properties

[github-actions]

👋 Hi! It looks like you modified some files in the Detectors folder.
You may need to bump the detector versions if any of the following scenarios apply:

• The detector detects more or fewer components than before
• The detector generates different parent/child graph relationships than before
• The detector generates different devDependencies values than before

If none of the above scenarios apply, feel free to ignore this comment 🙂