Remove the 200 indentation limit in the SQL parser

[frouioui]

Description

This PR removes the indentation limit of 200 which was introduced 8 years ago in #845. The original reason for this limit was to prevent stack overflow, however, there is little chance to reach stack overflow. There are already a lot of possibilities to OOM the VTGate by sending weird queries.

cc @arthurschreiber @GuptaManan100

Related Issue(s)

Fixes: #13159

Checklist

• "Backport to:" labels have been added if this change should be back-ported
• Tests were added or are not required
• Did the new or modified tests pass consistently locally and on the CI
• Documentation was added or is not required

Deployment Notes

[vitess-bot]

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[GuptaManan100]

We should add a passing test that has an indentation of over 200 just to make sure it works and we don't end up breaking it in the future.

[frouioui]

We should add a passing test that has an indentation of over 200 just to make sure it works and we don't end up breaking it in the future.

There is one already in go/vt/sqlparser/parse_test.go.

[vitess-bot]

I was unable to backport this Pull Request to the following branches: release-15.0, release-16.0.

[GuptaManan100]

@frouioui Could you point me to it? All I see is a test that was failing on max nesting is not failing on syntax error but I don't see a passing test.