LT-22446: Polish Installer Builds

[papeh]

Changes

• Pin patch installer builds to base build-1387
• Prevent collisions with -LogFile and -binaryLogger (Solution and Installer builds produce separate log files)
• Split Malayalam and Yoruba into separate installer components
• Clone genericinstaller with other installer deps
• Split Malayalam and Yoruba into separate components
• Move 'Copy local LCM' to between restore and build (so LCM artifacts are available during the build)
• Consolidate MsBuildArgs construction for main and installer builds
• Update CD workflows to use new build.ps1 parameters
• Update LDML Files (a new version was recently released)

Required Followup

Patch installer builds will need to be pinned to a new base build that includes the Malayalam and Yoruba installer components.

---

This change is 

[github-actions]

NUnit Tests

    1 files  ±0      1 suites  ±0   5m 52s ⏱️ +12s
4 407 tests ±0  4 320 ✅ ±0  87 💤 ±0  0 ❌ ±0 
4 416 runs  ±0  4 329 ✅ ±0  87 💤 ±0  0 ❌ ±0 

Results for commit 2fa8b1b. ± Comparison against base commit 0d6dace.

[johnml1135]

The following is some prompting from AI - it had a lot of good to say, but I will scope it down to the issues that it thought remained. I am also ignoring all Wix6 things right now - that is the next phase:

Required Followup

Critical sequencing issue: The ml and yo locale components do not exist in the build-1387 base installer. A patch built against build-1387 that includes these locales will fail because the MSP format requires exact component-level alignment between base and patch. The following steps must happen in order:

1. Merge this PR.
2. Trigger a new base installer build from main (producing e.g., build-1390).
3. Update the patch pin from build-1387 → build-1390 in a follow-up commit.

Items Not Addressed (Track Separately)

• Setup-InstallerBuild.ps1 still defaults BaseRelease to build-1188. Update to match the current patch pin.
• installer-build-guide.md still references build-1188 for patch builds. Update to match.
• Setup-Developer-Machine.ps1 has a # TODO (Hasso) 2026.03: clone genericinstaller.git (needed for the WiX 3 installer) that is unresolved.
• No end-to-end patch installer test exists in CI. The patch build can succeed but produce a corrupt .msp if component alignment is off; this is only caught at install time.

Review Notes

The Installer.targets diff is large (~470 lines) due to whitespace normalization (spaces → tabs). The substantive content changes are limited to the addition of ml and yo entries in the L10n file list. Reviewers may find it easier to review with whitespace ignored:

?w=1

Append ?w=1 to the Files Changed URL, or use:

git diff --ignore-all-space main -- Build/Installer.targets

[jasonleenaylor]

@jasonleenaylor reviewed 36 files and all commit messages, and made 1 comment.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on papeh).

---

FLExInstaller/CustomFeatures.wxi line 30 at r1 (raw file):

		<Feature Id="Malay" Title="Malay" Description="Allows the software to have a Malay user interface." Display="expand" Level="1" AllowAdvertise="no">
			<Condition Level="1">UserLanguageID = 1086</Condition>
			<!-- REVIEW (Hasso) 2026.03: ms and zlm are both Malay. Why are we including both? -->

We are including both because users may legitimately have their windows system to either of these and we don't want to force them to switch it.