feat: improve consistency and design (#1867)

Co-authored-by: Meier Lukas <meierschlumpf@gmail.com>

apps/nextjs/src/app/[locale]/manage/search-engines/_form.tsx

@@ -58,7 +58,7 @@ export const SearchEngineForm = (props: SearchEngineFormProps) => {
             />
           </Grid.Col>
         </Grid>
-        <IconPicker initialValue={initialValues?.iconUrl} {...form.getInputProps("iconUrl")} />
+        <IconPicker {...form.getInputProps("iconUrl")} />
 
         <Fieldset legend={t("search.engine.page.edit.configControl")}>
           <SegmentedControl

apps/nextjs/src/app/[locale]/manage/search-engines/page.tsx

@@ -45,7 +45,7 @@ export default async function SearchEnginesPage(props: SearchEnginesPageProps) {
       <Stack>
         <Title>{tEngine("page.list.title")}</Title>
         <Group justify="space-between" align="center">
-          <SearchInput placeholder={`${tEngine("search")}...`} defaultValue={searchParams.search} />
+          <SearchInput placeholder={`${tEngine("search")}...`} defaultValue={searchParams.search} flexExpand />
           {session.user.permissions.includes("search-engine-create") && (
             <MobileAffixButton component={Link} href="/manage/search-engines/new">
               {tEngine("page.create.title")}