feat(background-image): port `pf-v5-background-image` to `pf-v6-background-image` #11110

Job	Run time
Unit Tests (Web Test Runner)	2m 15s
Lint files	41s
SSR Tests (Playwright)	1m 41s
Verify that build runs on Windows	1m 29s
Compile project	0s
Publish Playwright Report	1m 24s
Validate successful build on main	5s
	7m 35s

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