feat(background-image): port `pf-v5-background-image` to `pf-v6-background-image` #11112

Job	Run time
Unit Tests (Web Test Runner)	2m 14s
Lint files	39s
SSR Tests (Playwright)	1m 45s
Verify that build runs on Windows	1m 51s
Compile project	0s
Publish Playwright Report	1m 15s
Validate successful build on main	5s
	7m 49s

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