feat(gatsby-source-wordpress): use image cdn for non-resizable images in html (svgs/gifs mainly) (#35529)

* use image cdn from non-resizeable image types in html image tags

* start adding svg test

* remove dead code and update comments

* move try/catch one level higher and add needed info to publicUrlResolver

* add untransformable image in html unit test

* add svg image integration test

* fix test after merge

Author: TylerBarnes

integration-tests/gatsby-source-wordpress/.env.test

@@ -6,6 +6,7 @@ ACF_VERSION=5.8.7
 YOAST_SEO_VERSION=18.7
 WPGRAPHQL_YOAST_VERSION=v4.17.0
 WPGRAPHQL_GUTENBERG_VERSION=v0.3.11
+SVG_SUPPORT_VERSION=2.4.2
 
 WPGRAPHQL_URL="http://localhost:8001/graphql"
 HTACCESS_USERNAME="admin"