[orca] Web: Fix another regression in language-related changes

[Joanmarie Diggs <joanied src gnome org>]

commit 1f2e111b545e017e47a194d046603933e3a67c39
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Thu Jan 6 13:10:58 2022 +0100

    Web: Fix another regression in language-related changes

 src/orca/scripts/web/script_utilities.py | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/src/orca/scripts/web/script_utilities.py b/src/orca/scripts/web/script_utilities.py
index 77e2b6491..ad5037d6b 100644
--- a/src/orca/scripts/web/script_utilities.py
+++ b/src/orca/scripts/web/script_utilities.py
@@ -965,6 +965,8 @@ class Utilities(script_utilities.Utilities):
                 continue
             if end <= startOffset:
                 break
+            startOffset = max(start, startOffset)
+            endOffset = min(end, endOffset)
             string = self.substring(obj, startOffset, endOffset)
             rv.append([obj, startOffset, endOffset, string])