Bump ember-source from 4.3.0 to 4.4.0 in /test-app

[dependabot[bot]]

Bumps ember-source from 4.3.0 to 4.4.0.

Release notes

Sourced from ember-source's releases.

v4.4.0

CHANGELOG

• #19882 / #20005 [FEATURE] Implement the unique-id helper per [RFC #0659](https://github.com/emberjs/rfcs/blob/master/text/0659-unique-id-helper.md).
• #19981 [FEATURE] Facilitate custom test setups per [RFC #0637](https://github.com/emberjs/rfcs/blob/master/text/0637-customizable-test-setups.md).
• #16879 [BUGFIX] isEmpty on nested objects
• #17978 Make hasListeners public
• #20014 Log until for deprecations

v4.4.0-beta.1

CHANGELOG

• #19882 / #20005 [FEATURE] Implement the unique-id helper per [RFC #0659](https://github.com/emberjs/rfcs/blob/master/text/0659-unique-id-helper.md).
• #19981 [FEATURE] Facilitate custom test setups per [RFC #0637](https://github.com/emberjs/rfcs/blob/master/text/0637-customizable-test-setups.md).
• #16879 [BUGFIX] isEmpty on nested objects
• #17978 Make hasListeners public
• #20014 Log until for deprecations

Changelog

Sourced from ember-source's changelog.

v4.4.0 (May 2, 2022)

• #19882 / #20005 [FEATURE] Implement the unique-id helper per [RFC #0659](https://github.com/emberjs/rfcs/blob/master/text/0659-unique-id-helper.md).
• #19981 [FEATURE] Facilitate custom test setups per [RFC #0637](https://github.com/emberjs/rfcs/blob/master/text/0637-customizable-test-setups.md).
• #16879 [BUGFIX] isEmpty on nested objects
• #17978 Make hasListeners public
• #20014 Log until for deprecations

v3.28.9 (April 19, 2022)

• #20028 Fix a memory leak in the Router Service class

Commits

• 687506c Release v4.4.0
• 6ae29ca Add v4.4.0 to CHANGELOG
• 2b6688d Add v3.28.9 to CHANGELOG
• c51c6ca Release v4.4.0-beta.1
• c1c4a73 Add v4.4.0-beta.1 to CHANGELOG
• ba3bc06 Disable non-enabled features
• 0e2f7e2 Add v4.3.0 to CHANGELOG
• 14cea13 Update docs to match native class syntax
• f35b4fe Merge pull request #20027 from emberjs/chriskrycho/unneeded-setFactoryFor-thi...
• 9f42aa6 Merge pull request #20031 from emberjs/revert-20000-cfreeman/expose-render-se...
• Additional commits viewable in compare view

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Superseded by #633.