Regression: bit_and aggregate function is incorrect

[alamb]

Describe the bug

#6904 introduced a bug where bit_and when a GROUP BY will now return zero always

This was found with the tests added in #6952

To Reproduce

Run test in #6952

External error: query result mismatch:
[SQL] SELECT
  bit_and(c1),
  bit_and(c2),
  bit_and(c3),
  bit_or(c1),
  bit_or(c2),
  bit_or(c3),
  bit_xor(c1),
  bit_xor(c2),
  bit_xor(c3),
  tag
FROM bit_aggregate_functions
GROUP BY tag
ORDER BY tag
[Diff] (-expected|+actual)
-   1 8 11 13 14 11 12 6 11 A
-   33 11 NULL 33 11 NULL 33 11 NULL B
+   0 0 0 13 14 11 12 6 11 A
+   0 0 NULL 33 11 NULL 33 11 NULL B
at tests/sqllogictests/test_files/aggregate.slt:1546

Expected behavior

Test should pass

Additional context

No response

[izveigor]

@alamb I think the main problem is with the default value. (for bit_and it is -1).

[alamb]

@alamb I think the main problem is with the default value. (for bit_and it is -1).

You are 100% correct -- thank you @izveigor