Review and optimize Fractional Prescale GlobalBoard loops

[rappoccio]

In #39464, there is an open issue that was decided to resolve at a later time (https://github.com/cms-sw/cmssw/pull/39464/files#r979213382).

Suggestions:

• From @fwyzard here
• From @perrotta here

[cmsbuild]

A new Issue was created by @rappoccio .

@Dr15Jones, @perrotta, @dpiparo, @rappoccio, @makortel, @smuzaffar can you please review it and eventually sign/assign? Thanks.

cms-bot commands are listed here

[makortel]

assign l1

[cmsbuild]

New categories assigned: l1

@epalencia,@rekovic,@cecilecaillol you have been requested to review this Pull request/Issue and eventually sign? Thanks

[missirol]

#39832 potentially solves this issue. It's under review.

[missirol]

#39832 is now merged, and I think it addresses the follow-ups asked in #39464.

[cecilecaillol]

+l1

[cmsbuild]

This issue is fully signed and ready to be closed.

[missirol]

please close