#13621: enable default fp32 acc for reduce

[bbradelTT]

Ticket

Link to Github Issue #13621

Problem description

reduce sum is not very accurate because fp32 acc for reduce was not enabled by default

What's changed

enable fp32 acc for reduce by default

Checklist

• Post commit CI passes Between two runs, all jobs passed https://github.com/tenstorrent/tt-metal/actions/runs/12147218201 and https://github.com/tenstorrent/tt-metal/actions/runs/12160961521
• Blackhole Post commit (if applicable) https://github.com/tenstorrent/tt-metal/actions/runs/12187630112
• Model regression CI testing passes (if applicable) https://github.com/tenstorrent/tt-metal/actions/runs/12187623632/job/33999246179 fails same as main except another random tt-smi reset not working. main: https://github.com/tenstorrent/tt-metal/actions/runs/12189517366
• Device performance regression CI testing passes (if applicable) https://github.com/tenstorrent/tt-metal/actions/runs/12187626769 passes for WH, GS not affected and fails which it does on main https://github.com/tenstorrent/tt-metal/actions/runs/12189542166
• New/Existing tests provide coverage for changes

[asandhupatlaTT]

lgtm