23961 [web] Fix flake due to shadow rendering difference on webkit (cla: yes, platform-web, waiting for tree to go green)

23963 Pass sampling rather than rely on (deprecated) filter-quality (cla: yes, waiting for tree to go green)

23965 [web] Fix alignment issue in rich paragraphs (cla: yes, platform-web, waiting for tree to go green)

23967 [macos] Make metal the default rendering backend on macOS >= 10.14 (cla: yes, waiting for tree to go green)

23969 [web] Fix svg based stroke rendering. (cla: yes)

23970 Fix a null pointer dereference if dladdr is unable to find a symbol name (cla: yes, waiting for tree to go green)