[Quick Accent] Add Maltese language

[rovercoder]

PR inspired by: #32862

Summary of the Pull Request

Adds Maltese latin alphabet symbols (ċ, ġ, ħ, ż) and the Euro (€) sign [Malta's currency] as a supported language into Quick Accent

PR Checklist

• Closes: Add Maltese language to Quick Accent #39472
• Communication: I've proposed to add this feature in the thread
• Tests: No need
• Localization: All end user facing strings can be localized
• Dev docs: No need
• New binaries: None
• Documentation updated: No need

Validation Steps Performed

Observing

[rovercoder]

@microsoft-github-policy-service agree

[Copilot]

Pull Request Overview

Adds support for the Maltese language in Quick Accent, enabling users to select Maltese and type its unique accented letters.

• Registers "MT" in the view model so Maltese appears in the language dropdown
• Provides a localized display string for Maltese in the English resource file
• Extends the core Language enum and default letter mappings to include Maltese accents

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
src/settings-ui/Settings.UI/ViewModels/PowerAccentViewModel.cs	Added Maltese (“MT”) to the list of supported languages
src/settings-ui/Settings.UI/Strings/en-us/Resources.resw	Added the “Maltese” resource entry for UI localization
src/modules/poweraccent/PowerAccent.Core/Languages.cs	Extended Language enum, included MT in mappings, and added GetDefaultLetterKeyMT
.github/actions/spell-check/expect.txt	Added “MT” to spell-check exception list

Comments suppressed due to low confidence (3)

src/modules/poweraccent/PowerAccent.Core/Languages.cs:843

• [nitpick] Consider adding a XML/doc comment above this method to explain its purpose and list the supported Maltese accents for better maintainability.

private static string[] GetDefaultLetterKeyMT(LetterKey letter)

src/modules/poweraccent/PowerAccent.Core/Languages.cs:843

• Add unit tests for GetDefaultLetterKeyMT to verify that each LetterKey returns the correct accented characters and that non-mapped keys return an empty array.

private static string[] GetDefaultLetterKeyMT(LetterKey letter)

src/modules/poweraccent/PowerAccent.Core/Languages.cs:848

• The mapping of VK_E to the euro symbol may be unintended for Maltese, since the PR only mentions adding alphabet accents. Remove or confirm this mapping if it’s not required.

LetterKey.VK_E => new[] { "€" },

[rovercoder]

An XML/doc comment above the private static string[] GetDefaultLetterKeyMT(LetterKey letter) method would break the convention in this particular file, therefore no XML/doc comment was added. Only a comment describing the language that is being handled was added above this method, as per convention.

Unit tests are not necessary in this case to test the private static string[] GetDefaultLetterKeyMT(LetterKey letter) method.

The mapping of VK_E to the Euro (€) symbol is intentional as Malta, being the only country having Maltese as its official language, uses Euro as its currency. In the other supported languages in Quick Access, currency symbols referring to the currencies in use in countries using each respective language are normally implemented.

[zadjii-msft]

Just based off the code near it - this looks fine to me.

@DHowett who's the new Quick Accent owner? I bet we can get this in

[zadjii-msft]

/azp run

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