ui-combobox: fix combobox dropdown icon vertical alignment with line-height

 - The 22px line-height ensures proper vertical centering of the dropdown icon within the combobox.

 - The previous default line-height caused misalignment or uneven icon positioning
   potentially affecting the visual appearance of element

Signed-off-by: banobepascal <[email protected]>
Change-Id: I3c73262f7aea41f67ff3161c90b703baac327a9c

Author: banobepascal

browser/css/jsdialogs.css

@@ -887,6 +887,10 @@ input[type='number']:hover::-webkit-outer-spin-button {
 	width: 100%;
 }
 
+.jsdialog .ui-combobox {
+	line-height: 22px;
+}
+
 .ui-listbox option {
 	font-weight: normal;
 	display: block;