UI tweaks (#14719)

* Show activity indicator when search grid is revalidating

* improve frigate+ button title grammar

web/src/components/overlay/detail/SearchDetailDialog.tsx

@@ -655,7 +655,9 @@ function ObjectSnapshotTab({
                             onSubmitToPlus(false);
                           }}
                         >
-                          This is a {search?.label}
+                          This is{" "}
+                          {/^[aeiou]/i.test(search?.label || "") ? "an" : "a"}{" "}
+                          {search?.label}
                         </Button>
                         <Button
                           className="text-white"
@@ -666,7 +668,9 @@ function ObjectSnapshotTab({
                             onSubmitToPlus(true);
                           }}
                         >
-                          This is not a {search?.label}
+                          This is not{" "}
+                          {/^[aeiou]/i.test(search?.label || "") ? "an" : "a"}{" "}
+                          {search?.label}
                         </Button>
                       </>
                     )}

web/src/components/overlay/dialog/FrigatePlusDialog.tsx

@@ -144,7 +144,8 @@ export function FrigatePlusDialog({
                   onSubmitToPlus(false);
                 }}
               >
-                This is a {upload?.label}
+                This is {/^[aeiou]/i.test(upload?.label || "") ? "an" : "a"}{" "}
+                {upload?.label}
               </Button>
               <Button
                 className="text-white"
@@ -155,7 +156,8 @@ export function FrigatePlusDialog({
                   onSubmitToPlus(true);
                 }}
               >
-                This is not a {upload?.label}
+                This is not {/^[aeiou]/i.test(upload?.label || "") ? "an" : "a"}{" "}
+                {upload?.label}
               </Button>
             </>
           )}