Handle enter key in Rename modal

Not handling the enter key reloads the page and doesn't rename the
potentially changed input.

Closes: #622

src/dialogs/rename.tsx

@@ -136,7 +136,17 @@ const RenameItemModal = ({ dialogResult, path, selected } : {
                   text={errorMessage}
                   isInline
                 />}
-                <Form isHorizontal>
+                <Form
+                  isHorizontal onSubmit={e => {
+                      e.preventDefault();
+                      if (name !== selected.name)
+                          renameItem();
+                      else {
+                          setNameError(checkName(name, cwdInfo?.entries || {}, selected));
+                      }
+                      return false;
+                  }}
+                >
                     <FormGroup fieldId="rename-item-input" label={label}>
                         <TextInput
                           autoFocus // eslint-disable-line jsx-a11y/no-autofocus

test/check-application

@@ -930,6 +930,16 @@ class TestFiles(testlib.MachineCase):
         b.set_input_text("#rename-item-input", "foo.txt")
         b.wait_in_text("#rename-item-input-helper", "Filename is the same as original name")
         b.click("div.pf-v5-c-modal-box__close > button")
+        b.wait_not_present(".pf-v5-c-modal-box")
+
+        # Enter allows renaming.
+        self.file_action_modal('foo.txt', 'Rename')
+        b.key('Enter')
+        b.wait_in_text("#rename-item-input-helper", "Filename is the same as original name")
+        b.set_input_text("#rename-item-input", "renamed-foo.txt", blur=False)
+        b.key('Enter')
+        b.wait_not_present(".pf-v5-c-modal-box")
+        b.wait_visible("[data-item='renamed-foo.txt']")
 
     def testHiddenItems(self) -> None:
         b = self.browser