tpl/collections: Simplify the reflect usage

[bep]

• Use helper funcs in hreflect package when possible.
• Use hreflect.ConvertIfPossible to handle conversions when possible.

[Copilot]

Pull Request Overview

This PR refactors the tpl/collections package to simplify reflection usage by consolidating helper functions into the hreflect package. The main goals are to reduce code duplication and provide a centralized, well-tested implementation of type conversion utilities.

Key changes include:

• Removing local reflection helper functions (toFloat, toInt, toUint, toString, isNumber, etc.) from tpl/collections
• Implementing a comprehensive ConvertIfPossible function in hreflect that handles lossless numeric conversions with proper overflow and precision checks
• Adding new conversion helper functions (ToInt64E, ToFloat64E, ToStringE) to hreflect

Reviewed Changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
tpl/collections/where.go	Replaces local helper functions with hreflect equivalents for type checking and conversion
tpl/collections/where_test.go	Removes TestToFloat test now covered by hreflect tests
tpl/collections/reflect_helpers.go	Removes duplicate helper functions (numberToFloat, convertNumber, isNumber, etc.) in favor of hreflect package
tpl/collections/collections.go	Updates to use hreflect conversion functions and fixes type vs kind confusion in Union
tpl/collections/symdiff_test.go	Removes extraneous blank line
common/hreflect/helpers.go	Implements comprehensive ConvertIfPossible with overflow/precision checking for int, uint, and float conversions
common/hreflect/convert.go	Adds new conversion helper functions with both error-returning and panicking variants
common/hreflect/helpers_test.go	Expands test coverage for ConvertIfPossible with additional conversion scenarios
common/hreflect/convert_test.go	Adds basic tests and benchmarks for new conversion functions
htesting/hqt/checkers.go	Adds IsSameNumber checker supporting all numeric types for testing

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[Copilot]

Pull Request Overview

Copilot reviewed 10 out of 10 changed files in this pull request and generated 2 comments.

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[Copilot]

Pull Request Overview

Copilot reviewed 29 out of 29 changed files in this pull request and generated 4 comments.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.