realArray: fix arrayCount tracking and assignment size safety

[spokening125]

This PR improves safety and lifecycle tracking for realArray.

Changes

• Decrement arrayCount when releasing memory.
• Add assert(size == right.size) in copy assignment to prevent unsafe size-mismatched writes.

Impact

• Keeps arrayCount accurate across object destruction.
• Makes operator= safer in debug builds.
• No API changes.

[Copilot]

Pull request overview

This PR improves ModuleBase::realArray safety and lifecycle tracking by ensuring the global arrayCount is decremented when memory is released and by preventing size-mismatched copy assignment writes (in debug builds).

Changes:

• Decrement realArray::arrayCount inside realArray::freemem() (triggered by the destructor).
• Add an assert(size == right.size) guard to realArray::operator=(const realArray&) to prevent unsafe copies when sizes differ.

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