fix(widgets): Add error boundary to widget footer

Wrap the Footer slot content in an ErrorBoundary so that a crashing
footer component does not take down the entire widget. The fallback
renders WidgetError inside a relative Container so the absolute-
positioned error panel stays contained within the footer area.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: priscilawebdev

static/app/views/dashboards/widgets/widget/widget.tsx

@@ -2,7 +2,7 @@ import {Fragment} from 'react';
 import {css} from '@emotion/react';
 import styled from '@emotion/styled';
 
-import {Flex} from '@sentry/scraps/layout';
+import {Container, Flex} from '@sentry/scraps/layout';
 
 import ErrorBoundary from 'sentry/components/errorBoundary';
 import {defined} from 'sentry/utils';
@@ -95,7 +95,17 @@ function WidgetLayout(props: Widget) {
       )}
 
       {props.Footer && (
-        <FooterWrapper noPadding={props.noFooterPadding}>{props.Footer}</FooterWrapper>
+        <FooterWrapper noPadding={props.noFooterPadding}>
+          <ErrorBoundary
+            customComponent={({error}) => (
+              <Container position="relative">
+                <WidgetError error={error ?? undefined} />
+              </Container>
+            )}
+          >
+            {props.Footer}
+          </ErrorBoundary>
+        </FooterWrapper>
       )}
     </Frame>
   );