feat(background-image): port `pf-v5-background-image` to `pf-v6-background-image` #11111

Job	Run time
Unit Tests (Web Test Runner)	2m 20s
SSR Tests (Playwright)	1m 38s
Verify that build runs on Windows	1m 54s
Lint files	43s
Compile project	0s
Publish Playwright Report	1m 19s
Validate successful build on main	4s
	7m 58s

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