refs #20259 [fid_bbi: Adv Search for FF 78.11.0. ESR]

* introduces fixes for FF 78.11 ESR

themes/fid_bbi/scss/base/form.scss

@@ -90,6 +90,8 @@ textarea {
   border-radius: 0; // Edge fix
   box-shadow: none;
   font-weight: 500;
+  // Fix for Firefox 78.11.0. ESR - remove when this release is outdated
+  height: 56px;
   max-width: 100%;
   min-width: 0; // Firefox fix
   padding: g(.5) - 2px;

themes/fid_bbi/scss/blocks/advanced-search.scss

@@ -64,7 +64,8 @@
 
   .adv-input {
     flex: 1;
-    flex-basis: 60%;
+    // was 60% which doesn't work on Firefox 78.11.0. ESR - remove when this release is outdated
+    flex-basis: 59%;
     margin-bottom: g(.5);
     //width: calc(100% - #{g(2.5)}); // Space for "x" button