Fix missing filtering term type 1 when editing jinja route template (#4357)

# What this PR does
When editing a jinja route template the filtering_term_type was not
being provided so it was being validated as regex instead. This adds the
missing flag so that the route will use the correct validation. The
reason this was not being hit in the past is most jinja templates were
still passing regex validation.

## Which issue(s) this PR closes

Closes #4259 

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## Checklist

- [ ] Unit, integration, and e2e (if applicable) tests updated
- [x] Documentation added (or `pr:no public docs` PR label added if not
required)
- [x] Added the relevant release notes label (see labels prefixed w/
`release:`). These labels dictate how your PR will
    show up in the autogenerated release notes.

grafana-plugin/src/pages/integration/Integration.tsx

@@ -186,7 +186,7 @@ class _IntegrationPage extends React.Component<IntegrationProps, IntegrationStat
             }}
             channelFilterId={channelFilterIdForEdit}
             onUpdateTemplates={this.onUpdateTemplatesCallback}
-            onUpdateRoute={this.onUpdateRoutesCallback}
+            onUpdateRoute={(values, channelFilterId) => this.onUpdateRoutesCallback(values, channelFilterId, 1)}
             template={selectedTemplate}
             templateBody={
               selectedTemplate?.name === 'route_template'