Update the license headers throughout the repository to reference Google LLC rather than Google Inc, for the required license headers. PR Close #37205
Design doc: https://docs.google.com/document/d/1VmTkz0EbEVSWfEEWEvQ5sXyQXSCvtMOw4t7pKU-jOwc/edit?usp=sharing
Inlcuded fixes: - include preamble in generated source map - always add a mapping for line/col 0 so that the generated sourcemap is not sparse - use a uniue sourceUrl for inline templates even in the AOT case