fix: provide inline suggestions in Docker Compose files

[laileni-aws]

Problem

Amazon Q inline suggestions do not work in Docker Compose files. In a docker-compose.yaml (or .yml) file, completions fail with a "language is not supported" style result, even though inline suggestions work in a plain .yaml file.

The cause is the editor language id: VS Code identifies Docker Compose files with the dockercompose language id (not yaml). The runtime language mapping did not know about dockercompose, so the language was treated as unsupported and no suggestions were requested.

Fix

Treat dockercompose as YAML:

• packages/core/src/codewhisperer/util/runtimeLanguageContext.ts: map the dockercompose platform language id to the yaml runtime language in supportedLanguageMap.
• packages/core/src/codewhisperer/models/constants.ts: add dockercompose to platformLanguageIds so it is recognized as a supported platform language id (this is also the key type used by the map above).

With this change, Docker Compose files receive the same inline suggestion support as other YAML files.

Testing

• Extended packages/amazonq/test/unit/codewhisperer/util/runtimeLanguageContext.test.ts:
  • isLanguageSupported('dockercompose') returns true;
  • getLanguageContext('dockercompose') resolves to yaml.
• Type-checked the core package (tsc -p ./ --noEmit): no type errors in the changed files.
• Added a changelog entry.

Notes

• dockercompose is the language id VS Code assigns to docker-compose.yaml / docker-compose.yml (and compose.yaml) files; mapping it to YAML is consistent with how the extension already treats yml and yaml.