expand clang-tidy checks to category/mpt

[mkolosick]

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[Copilot]

Pull Request Overview

This PR expands clang-tidy checks to the category/mpt directory, adding it to the linting script and addressing various issues flagged by the linter. The changes include:

• Adding category/mpt to the clang-tidy check script
• Fixing potential undefined behavior with bit shifting on negative values
• Adding NOLINT suppressions for known analyzer bugs and false positives
• Improving const correctness throughout the codebase
• Cleaning up includes and variable declarations

Reviewed Changes

Copilot reviewed 54 out of 54 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
scripts/check-clang-tidy.sh	Added category/mpt to the list of directories checked by clang-tidy
category/mpt/util.hpp	Fixed potential undefined behavior in bit shift operation using std::max to prevent negative shift
category/mpt/upward_tnode.hpp	Added NOLINT suppressions for known clang-analyzer bug with uninitialized object detection
category/mpt/update_aux.cpp	Added const qualifiers, NOLINT suppressions, and cleaned up includes
category/mpt/trie.hpp	Removed noexcept specifiers from virtual functions and improved const correctness
category/mpt/trie.cpp	Added const qualifiers and NOLINT suppressions for false positives
category/mpt/test/*.cpp	Applied const correctness improvements and added explicit constructors
category/mpt/request.hpp	Changed operator[] to return non-const reference and added reinitializes attribute
category/mpt/node.cpp	Fixed pointer cast and removed unused includes
Other files	Various const correctness improvements, include cleanups, and NOLINT suppressions

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