Fix: Prevent unnecessary title-case conversion in i18n helper function

[ac-mmi]

The _ function in our i18n helper was unnecessarily converting text to title case as a fallback when a translation was missing. This caused issues with domain-specific strings like musical notes, codes, and proper nouns where the original casing should be preserved.

Changes made:

• Removed the title-case fallback.
• Ensures that if all translation attempts fail, the original text is returned unchanged.
• No other logic has been altered, so casing is no longer modified unexpectedly.

Fixes #4779

[github-actions]

✅ All Jest tests passed! This PR is ready to merge.

[omsuneri]

LGTM but the issue still persisting ???

[ac-mmi]

@omsuneri output from my branch

[omsuneri]

are these changes explicitly for the phrase maker ?? cause when i m creating a note on canvas it is still there with "Ti" please verify once !!
also it is still showing undefined on collapsing so the issue is still there and the phrase maker is still rendering the ti note as Ti

[github-actions]

✅ All Jest tests passed! This PR is ready to merge.

[ac-mmi]

@omsuneri Removed previously added cleanedText fallback (added earlier by me) to preserve original text exactly and avoid unwanted changes for punctuation-sensitive strings like musical notes or codes.

[omsuneri]

issue is still there for the japanese follow the steps to reproduce in the issue by chnaging the language
look for it btw logic seems good to me in this case !!

[Copilot]

Pull Request Overview

This PR fixes an issue where the i18n helper function was unintentionally modifying the casing of untranslated strings. The function previously attempted multiple fallback translation lookups with various text transformations (lowercase, title case, hyphenated), but when all translations failed, it would return title-cased text instead of the original. This caused problems with domain-specific strings like musical notes and codes that require specific casing.

Key changes:

• Removed all fallback translation attempts that modified text casing (lowercase, title case, hyphenated variants)
• Simplified the translation logic to preserve original text casing when no translation is found

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[github-actions]

✅ All Jest tests passed! This PR is ready to merge.

[ac-mmi]

@omsuneri Updated _getPitch(c) in block.js to decouple logic lookup from localized display

• Added solfnotesRef for canonical English solfege order (["ti","la","sol","fa","mi","re","do"]) used for indexing.
• Continued using _('ti la sol fa mi re do') (solfnotesLocalized) for rendering the collapsed label, respecting translations.

[omsuneri]

@ac-mmi issue is not recurring anymore
Good Work !!

[omsuneri]

LGTM