fix(amazonq): remove hardcoded strings, update placeholder

[avi-alpert]

Problem

Strings were hardcoded in .ts and test files. Input placeholder text did not include information about using @ to insert context

Solution

Move strings to language file, update placeholder text to match figma.

---

• Treat all work as PUBLIC. Private feature/x branches will not be squash-merged at release time.
• Your code changes must meet the guidelines in CONTRIBUTING.md.
• License: I confirm that my contribution is made under the terms of the Apache 2.0 license.

[github-actions]

• This pull request implements a feat or fix, so it must include a changelog entry (unless the fix is for an unreleased feature). Review the changelog guidelines.
  • Note: beta or "experiment" features that have active users should announce fixes in the changelog.
  • If this is not a feature or fix, use an appropriate type from the title guidelines. For example, telemetry-only changes should use the telemetry type.

[avi-alpert]

• This pull request implements a feat or fix, so it must include a changelog entry (unless the fix is for an unreleased feature). Review the changelog guidelines.
  • Note: beta or "experiment" features that have active users should announce fixes in the changelog.
  • If this is not a feature or fix, use an appropriate type from the title guidelines. For example, telemetry-only changes should use the telemetry type.

There will be one changelog entry added to encapsulate all falcon changes before branch is merged with master

[jpinkney-aws]

/runIntegrationTests

[avi-alpert]

/runIntegrationTests

[avi-alpert]

E2E tests are failing due to code changes in this PR, will push a fix

edit: I noticed that E2E tests are failing in commits in feature/falcon, likely due to changes in Mynah library since this branch is using beta. Will investigate

[avi-alpert]

/runIntegrationTests

[avi-alpert]

/runIntegrationTests

[avi-alpert]

The last failing E2E test is stumping me, its only happening in stable and I don't think its related to this PR. Unable to reproduce on local. I saw it failed earlier in https://d1ihu6zq92vp9p.cloudfront.net/1c9da8f0-ce74-4555-b368-afcad7647a82/report.html