Improve logic for obtaining surrounds range in Vim mode (#10938)

now correctly retrieves range in cases where escape characters are
present. Fixed #10827


Release Notes:

- vim: Fix logic for finding surrounding quotes to ignore escaped
characters (#10827)

crates/vim/test_data/test_singleline_surrounding_character_objects_with_escape.json

@@ -0,0 +1,10 @@
+{"Put":{"state":"h\"e\\\"lˇlo \\\"world\"!"}}
+{"Key":"v"}
+{"Key":"i"}
+{"Key":"\""}
+{"Get":{"state":"h\"«e\\\"llo \\\"worldˇ»\"!","mode":"Visual"}}
+{"Put":{"state":"hello \"teˇst \\\"inside\\\" world\""}}
+{"Key":"v"}
+{"Key":"i"}
+{"Key":"\""}
+{"Get":{"state":"hello \"«test \\\"inside\\\" worldˇ»\"","mode":"Visual"}}