test: consolidated aggregation any value expectations tests

[ryanseq-gyg]

Description

• Refactored all the unit tests and consolidated them under parameterised unit tests
• Standardise the format of the tests. This should make it easier to write new tests
• Changed the publish github workflow to trigger manually

Checklist

• Tests have been added in the prescribed format
• Commit messages follow Conventional Commits format
• Pre-commit hooks pass locally

[Copilot]

Pull Request Overview

This PR consolidates test files for aggregation "any value" expectations by removing individual test files and reorganizing the test structure. The changes update the test directory path in the sanity checks script, modify the stub file generation, and adjust CI workflow configurations.

Reviewed Changes

Copilot reviewed 45 out of 80 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tests/expectations_implemented/aggregation_expectations/any_value_expectations/*.py	Removed individual test files for unique_rows, min_rows, max_rows, max_null_percentage, max_null_count, and distinct column value expectations
tests/expectations/column/string_expectations/*.py	Added new test files for string expectations including starts_with, not_contains, length_less_than, length_greater_than, length_equals, and length_between
scripts/sanity_checks.py	Updated tests directory path from tests/expectations_implemented to tests/expectations
dataframe_expectations/suite.pyi	Updated stub file with new class definitions and method signatures
.github/workflows/publish.yaml	Changed from tag-based to manual workflow dispatch
.github/workflows/main.yaml	Removed pull_request trigger from CI workflow

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