Svelte: add gap between line numbers and content (#62156)

Author: camdencheek

client/web-sveltekit/src/lib/CodeMirrorBlob.svelte

@@ -61,7 +61,7 @@
             color: 'var(--line-number-color)',
         },
         '.cm-line': {
-            paddingLeft: '0',
+            paddingLeft: '1ex',
         },
         '.selected-line': {
             backgroundColor: 'var(--code-selection-bg)',