Rename LegacyRenderSVGViewportContainer -> RenderSVGViewportContainer and adapt all call sites. Introduce RenderSVGViewportContainer at the same time as stub implementation to be extended in a follow-up patch
Pull request: https://github.com/WebKit/WebKit/pull/2371
Committed 252500@main (273d61050056): <https://commits.webkit.org/252500@main> Reviewed commits have been landed. Closing PR #2371 and removing active labels.
<rdar://problem/97069392>