Connector builder: Show warning callout if page/slice limit is reached

[flash1293]

Based on https://github.com/airbytehq/airbyte/issues/20771

If the test_read_limit_reached flag is set on the test read response, a warning callout should be shown to the user informing them that a "real" read during a sync job might yield more data.

As this callout might be shown often, it should be dismissable

Acceptance criteria

• Show a warning callout in the testing panel if the test read limit is reached
• Make it dismisable (cross icon in the top right, if clicked it will store a flag in local storage and not show it again)
• Additionally have a little indicator with a tooltip next to the page selector

[flash1293]

Grooming notes:

• Ping Nicolas for design