HPCC-12463 Cannot paste into search field

ECL Watch entry fields with placeholder text display the wrong context menu.

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>
Merge pull request #6620 from GordonSmith/HPCC-12463

HPCC-12463 Cannot paste into search field

Reviewed-By: Miguel Vazquez <miguel.vazquez@lexisnexis.com>
Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>