fix: Properly mask Portable PDB Age for symstore/SSQP lookups

[Swatinem]

Portable PDB lookups via the SSQP scheme say that the Age portion of the ID needs to be replaced with u32::MAX.

See https://github.com/dotnet/symstore/blob/main/docs/specs/SSQP_Key_Conventions.md#portable-pdb-signature

This allows us to properly look up Portable PDB files on the upstream microsoft symbol server.
For example, http://msdl.microsoft.com/download/symbols/microsoft.aspnetcore.routing.pdb/fbd5dfdfa5a44e09a75862fcbb8c914aFFFFFFFF/microsoft.aspnetcore.routing.pdb might be such a valid file which matches a stack frame from https://sentry.io/organizations/sentry-sdks/issues/2442781715/events/a4f4c59a7d1a4b06bd98c0d1dcfa7e8c/?project=5428537

[github-actions]

	Warnings
⚠️	Snapshot changes likely affect Sentry tests. If the Sentry-Symbolicator Integration Tests in CI are failing for your PR, please check the symbolicator test suite in Sentry and update snapshots as needed.

Instructions for snapshot changes

Sentry runs a symbolicator integration test suite located at tests/symbolicator/. Changes in this PR will likely result in snapshot diffs in Sentry, which will break the master branch and in-progress PRs.

Follow these steps to update snapshots in Sentry:

1. Check out latest Sentry master and enable the virtualenv.
2. Enable symbolicator (symbolicator: true) in sentry via ~/.sentry/config.yml.
3. Make sure your other devservices are running via sentry devservices up --exclude symbolicator. If
   they're already running, stop symbolicator with sentry devservices down symbolicator. You want to use your
   own development symbolicator to update the snapshots.
4. Run your development symbolicator on port 3021, or whatever port symbolicator is configured to use
   in ~/.sentry/config.yml.
5. Export SENTRY_SNAPSHOTS_WRITEBACK=1 to automatically update the existing snapshots with your new
   results and run symbolicator tests with pytest (pytest tests/symbolicator).
6. Review snapshot changes locally, then create a PR to Sentry.
7. Merge the Symbolicator PR, then merge the Sentry PR.

Generated by 🚫 dangerJS against df237bb

[Swatinem]

tbh, I have no idea why this is symstore and not ssqp. The only difference seems to be the casing, and the upstream microsoft server seems to be case insensitive anyway as far as I have tried.

[codecov-commenter]

Codecov Report

Base: 70.27% // Head: 70.28% // Increases project coverage by +0.00% 🎉

Coverage data is based on head (df237bb) compared to base (1370da5).
Patch coverage: 80.00% of modified lines in pull request are covered.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #888   +/-   ##
=======================================
  Coverage   70.27%   70.28%           
=======================================
  Files          59       59           
  Lines       11493    11496    +3     
=======================================
+ Hits         8077     8080    +3     
  Misses       3416     3416           

Impacted Files	Coverage Δ
crates/symbolicator/src/utils/paths.rs	75.59% <80.00%> (+0.14%)	⬆️

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