fix(dashboards): Set default interval for errors/transactions to 1m (#66983)

Set the desired interval for errors and transactions to 1m instead of
5m. This makes the most minimal change between our existing
behaviour and the desired behaviour (to have 1m intervals at 1h)
because the desired interval won't exceed the max bucket count
here. The other intervals remain relatively the same for other time
ranges.

Closes https://github.com/getsentry/sentry/issues/66645

static/app/components/modals/widgetBuilder/addToDashboardModal.spec.tsx

@@ -230,7 +230,7 @@ describe('add to dashboard modal', () => {
       expect.objectContaining({
         query: expect.objectContaining({
           environment: [],
-          interval: '5m',
+          interval: '1m',
           orderby: '',
           partial: '1',
           project: [1],

static/app/views/dashboards/datasetConfig/errorsAndTransactions.tsx

@@ -534,7 +534,11 @@ function getEventsSeriesRequest(
   const {displayType, limit} = widget;
   const {environments, projects} = pageFilters;
   const {start, end, period: statsPeriod} = pageFilters.datetime;
-  const interval = getWidgetInterval(displayType, {start, end, period: statsPeriod});
+  const interval = getWidgetInterval(
+    displayType,
+    {start, end, period: statsPeriod},
+    '1m'
+  );
   const isMEPEnabled = defined(mepSetting) && mepSetting !== MEPState.TRANSACTIONS_ONLY;
 
   let requestData;