Fix audio plugins scanner

[RomanPudashkin]

Ports: #33608
Resolves: #33454
Depends on: musescore/muse_framework#67

[coderabbitai]

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ℹ️ Recent review info

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Review profile: CHILL

Plan: Pro

Run ID: ab52dc76-696e-4029-816c-313f38ab8245

📥 Commits

Reviewing files that changed from the base of the PR and between 99a6d69 and aa4f6d4.

📒 Files selected for processing (2)

• muse
• src/appshell/internal/startupscenario.cpp

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📝 Walkthrough

Walkthrough

This PR contains two independent changes: an update to the muse submodule pointer to reference a newer commit, and a modification to the StartupScenario::registerAudioPlugins() method in the appshell module. The registerAudioPlugins() method previously captured the return value from updatePluginsRegistry() and logged errors when the operation failed; this error-checking code is now removed, and the method call executes without local success or failure handling.

🚥 Pre-merge checks | ✅ 3 | ❌ 2

❌ Failed checks (1 warning, 1 inconclusive)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.
Description check	❓ Inconclusive	The PR description includes links to the ported issue and dependencies but lacks the detailed information requested by the template (checklist items, commit message descriptions, testing details).	Expand the description with more details about what was changed, testing performed, and complete the template checklist items to clarify the scope.

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'Fix audio plugins scanner' directly relates to the main changes in the PR, which address audio plugin scanning behavior.
Linked Issues check	✅ Passed	The PR addresses the core issue #33454 by preventing automatic audio plugin scans at startup through code changes that update plugin registry handling.
Out of Scope Changes check	✅ Passed	The muse submodule update and the removal of error handling in registerAudioPlugins() appear to be directly related to fixing the audio plugin scanner behavior per issue #33454.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

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