Fix ember-release, ember-beta and ember-canary on ember-source 7

[NullVoxPopuli-ai-agent]

The three try scenarios have been failing on every branch, not just recent ones. They now pass.

Cause

babel.config.cjs in test-app and docs-app sets:

compilerPath: 'ember-source/dist/ember-template-compiler.js',

ember-source 7.0 removed that file and its explicit exports entry. What is left is the wildcard "./*": "./dist/{prod,dev}/packages/*", so the old specifier resolves to dist/prod/packages/dist/ember-template-compiler.js, which does not exist. The vite build fails before a single test runs:

[commonjs--resolver] [BABEL] .../ember-source/dist/dev/packages/ember-testing/index.js:
Cannot find module '.../ember-source/dist/prod/packages/dist/ember-template-compiler.js'
imported from .../babel-plugin-ember-template-compilation/dist/src/node-main.js

Fix

compilerPath: 'ember-source/ember-template-compiler/index.js',

That specifier resolves on both layouts:

• 6.11: ./* maps to dist/packages/*
• 7.x: ./* maps to dist/prod/packages/* and dist/dev/packages/*

The module exports precompile, _preprocess and _buildCompileOptions, which is what babel-plugin-ember-template-compilation reads. It also ends the "legacy ember-template-compiler.js AMD bundle" deprecation that lint prints today.

Verification

Ran locally with ember try:one:

Scenario	ember-source	Result
ember-release	7.2.0	187 pass, 0 fail
ember-beta	7.3.0-beta.1	187 pass, 0 fail
ember-canary	7.4.0-alpha.1	187 pass, 0 fail

The default scenario on 6.11.0 still passes 187, and vite build in docs-app succeeds.

Please label this internal.

🤖 Generated with Claude Code