fix: correctly show decrypt progress modal after 3 seconds when downloading storage mode responses

[karrui]

Problem

Missed adding vm... seems like that came back to bite us in the butt.

Solution

Bug Fixes:

• fix: correctly show decrypt progress modal when downloading storage mode responses

Tests

For local testing, I've set the timeout before the modal appears to 0 milliseconds (i.e instantly).
For release testing, a test form with >100k responses should be used so the decrypting takes more than 3 seconds.

• Decrypt modal should show up after 3 seconds if downloading storage mode responses has not completed in that timeframe.

[tshuli]

lgtm!