Fixed the following issues for the new query tool:
1) In Dark mode > Replace/Find dialogue forward & reverse buttons are stuck to
each other.
2) In Dark/High contrast mode > Checkbox is not visible for false value.
3) Wrap toolbar when size goes very small.
4) Replace functionality does not wo
Fixed the following issues for the new query tool:
1) Failed to fetch query history error sometimes.
2) In copy paste row, if a copied row has [null], then those are pasted as an
empty string.
3) When Data output is empty, show an empty grid.
4) Schema diff generates a script button resulting
