(fix) syntax highlighting inside template

This change means that there needs to be a whitespace between the `>` and the start of the template contents, but that should be the case 99%. If someone comes up with a better solution, we are happy to accept a PR.
#694

Author: dummdidumm

packages/svelte-vscode/syntaxes/svelte.tmLanguage.src.yaml

@@ -82,7 +82,7 @@ injections:
 
   # Default (just introduces a new scope)
   'L:meta.template.svelte - meta.lang - (meta source)':
-    patterns: [{begin: '(?<=>)(?!</)', end: '(?=</)', patterns: [{ include: '#scope' }]}]
+    patterns: [{begin: '(?<=>)\s', end: '(?=</)', patterns: [{ include: '#scope' }]}]
 
   # ---- LANGUAGE EXTENSIONS