[UX] Add an API that returns projects that lack active fleets #6108

Job	Run time
compute-version	3s
build-docs / build-docs	1m 12s
build-artifacts / frontend-build	1m 53s
build-artifacts / gateway-build	11s
build-artifacts / code-lint	43s
build-artifacts / runner-test (macos-latest)	1m 12s
build-artifacts / runner-test (ubuntu-latest)	1m 5s
build-artifacts / generate-json-schema	22s
build-artifacts / runner-compile (ubuntu-24.04-arm, linux, arm64)	37s
build-artifacts / runner-compile (ubuntu-24.04, linux, amd64)	35s
build-artifacts / python-build	17s
build-artifacts / python-test (macos-latest, 3.10)	2m 44s
build-artifacts / python-test (macos-latest, 3.11)	3m 57s
build-artifacts / python-test (macos-latest, 3.9)	4m 14s
build-artifacts / python-test (ubuntu-latest, 3.9)	4m 40s
build-artifacts / python-test (macos-latest, 3.13)	3m 18s
build-artifacts / python-test (ubuntu-latest, 3.13)	4m 37s
build-artifacts / python-test (windows-latest, 3.13)	1m 59s
build-artifacts / python-test (macos-latest, 3.12)	2m 57s
build-artifacts / python-test (ubuntu-latest, 3.10)	5m 5s
build-artifacts / python-test (ubuntu-latest, 3.12)	4m 52s
build-artifacts / python-test (windows-latest, 3.12)	1m 51s
build-artifacts / python-test (windows-latest, 3.9)	1m 52s
build-artifacts / python-test (windows-latest, 3.10)	2m 26s
build-artifacts / python-test (windows-latest, 3.11)	2m 9s
build-artifacts / python-test (ubuntu-latest, 3.11)	4m 39s
upload-pre-pypi-artifacts / upload-pre-pypi-artifacts	19s
upload-post-pypi-artifacts / upload-post-pypi-artifacts	15s
	1h 0m 4s

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