Fix #1279, rtems queue multi-size, mimic posix logic

[thesamprice]

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Describe the contribution
Refactor rtems queue to not do size check, and to mimic posix logic.

Fixes #1279

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System(s) tested on

• Hardware: [e.g. PC, SP0, MCP750]
• OS: [e.g. Ubuntu 18.04, RTEMS 4.11, VxWorks 6.9]
• Versions: [e.g. cFE 6.6, OSAL 4.2, PSP 1.3 for mcp750, any related apps or tools]

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[thesamprice]

The posix diff vs rtems diff
This is a more aggressive change than just deleting the size check.

[skliper]

Looks great! Probably should use OSAL_SIZE_C to explicitly convert to size_t, I think that would avoid implicit conversion warnings if/when we ever do that analysis. Looks like you'll need to run clang-format-10 (or fix formatting by hand) to squash the format workflow error.

[chillfig]

@thesamprice, would you please take a look at the unit test failure before merging?

[thesamprice]

@jphickey You recently added fix-1252-condvar-api. Is there anything in this merge that would be causing that test to fail?

[thesamprice]

@chillfig Not sure why the last update fixed the unit test failure, but i guess adding OSAL_SIZE_C casting fixed it?