feat(common): upgrade warning to logged error for lazy-loaded LCP images #52004
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This PR upgrades the existing warning when an NgOptimizedImage is discovered to be the LCP element and not given the
priority
attribute to an error. Not usingpriority
causes the LCP image to be lazy-loaded and can significantly hurt image performance. This error is only logged in dev.This PR is a pared-back version of #51748. As this error is logged, not thrown, it is no longer a breaking change and does not require the functionality to turn the error off in testbed scenarios. CC: @AndrewKushnir