Fix custom shader output

[rh101]

Describe your changes

The batch ID and program ID should be uint64_t, but in places they were being used as int64_t, causing incorrect results of conditional statements that check if batching should be enabled.

This fixes the issue of incorrect output when the same custom shader is used on multiple sprites.

Issue ticket number and link

#2104

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[rh101]

The changes made in this PR may not be correct, and are not actually required, and the correct solution is to simply call ProgramState::updateBatchId() when the uniforms are updated for a specific program state.