fix: remove redundant empty items from slice and map

[LinuxSuRen]

No description provided.

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
+0.32%	85.71%

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (05bafdb)	5504	4842	87.97%
Head commit (1b7b235)	5756 (+252)	5082 (+240)	88.29% (+0.32%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#242)	14	12	85.71%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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[github-actions]

There are 20 test cases:

API	Average	Max	Min	Count	Error
POST http://localhost:8080/server.Runner/CreateTestSuite	6.871559ms	6.871559ms	6.871559ms	1	0
gRPC 127.0.0.1:7070/server.Runner/GetVersion	3.636664ms	5.340546ms	1.663614ms	3	0
gRPC 127.0.0.1:7070/server.Runner/FunctionsQuery	3.11456ms	3.826133ms	1.804016ms	3	0
gRPC 127.0.0.1:7070/server.Runner/FunctionsQueryStream	2.429254ms	2.817725ms	2.007117ms	3	0
POST http://localhost:8080/server.Runner/FunctionsQuery	1.993818ms	1.993818ms	1.993818ms	1	0
POST http://localhost:8080/server.Runner/GetVersion	1.840616ms	1.840616ms	1.840616ms	1	0
POST http://localhost:8080/server.Runner/ListTestCase	1.820065ms	2.097118ms	1.543013ms	2	0
POST http://localhost:8080/server.Runner/ListCodeGenerator	1.692114ms	1.692114ms	1.692114ms	1	0
POST http://localhost:8080/server.Runner/GetTestCase	1.653714ms	1.653714ms	1.653714ms	1	0
POST http://localhost:8080/server.Runner/ConvertTestSuite	1.465213ms	1.465213ms	1.465213ms	1	0
POST http://localhost:8080/server.Runner/GenerateCode	1.424213ms	1.424213ms	1.424213ms	1	0
POST http://localhost:8080/server.Runner/GetSuggestedAPIs	1.251311ms	1.251311ms	1.251311ms	1	0
POST http://localhost:8080/server.Runner/GetSuites	1.116209ms	1.116209ms	1.116209ms	1	0
POST http://localhost:8080/server.Runner/PopularHeaders	1.097409ms	1.097409ms	1.097409ms	1	0
POST http://localhost:8080/server.Runner/UpdateTestSuite	897.108µs	897.108µs	897.108µs	1	0
POST http://localhost:8080/server.Runner/DeleteTestSuite	895.407µs	1.17271ms	618.105µs	2	0
POST http://localhost:8080/server.Runner/GetSecrets	848.107µs	848.107µs	848.107µs	1	0
POST http://localhost:8080/server.Runner/GetTestSuite	668.906µs	668.906µs	668.906µs	1	0
POST http://localhost:8080/server.Runner/ListConverter	657.005µs	657.005µs	657.005µs	1	0
POST http://localhost:8080/server.Runner/GetStores	606.505µs	606.505µs	606.505µs	1	0