Fix line-height change from hover (#5449)

* Fix line-height change from hover

Partial solution to #5448.  Fixes changing `line-height`
but there are still tiny discrepancies in overall size.

* Rebuild for 2023

Author: edemaine

docs/v2/browser-compiler-legacy/coffeescript.js

@@ -50,6 +50,7 @@
   white-space: pre-wrap;
 }
 .CodeMirror pre,
+.CodeMirror pre.CodeMirror-line,
 pre.placeholder-code {
   line-height: 1.4em;
 }

docs/v2/browser-compiler-modern/coffeescript.js

@@ -30,6 +30,7 @@
   white-space: pre-wrap;
 }
 .CodeMirror pre,
+.CodeMirror pre.CodeMirror-line,
 pre.placeholder-code {
   line-height: 1.4em;
 }