fix(sqllab): rendering performance regression by resultset

[justinpark]

SUMMARY

When ResultSet renders a large size of column record (i.e. preview of FCC 2018 Survey), rendering cost of VirtualizedTable is heavy. To avoid the lag of the typing editor, we should avoid the ResultSet rendering while typing.
This commit fixes the inefficient userSelector in ResultSet which triggers the re-rendering of FilterableTable anytime redux action triggered.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

After (no lag while typing):

after--rendering-regression-resultset.mov

Before (lagging after render the table resultset):

before--rendering-regression-resultset.mov

TESTING INSTRUCTIONS

Load example db
Go to SQL Lab and select the 'FCC 20218 Survey' in the table schema
After the preview result loaded, type the sql in the editor to check the lagging

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[michael-s-molina]

LGTM. Thank you for the PR @justinpark!