[11.x] Add currency-aware isFractionUnit param to Number::currency()

[shaedrich]

See discussions in #54360, #54163, and #54456

Instead of

$amount = 10252; // from database, request, etc.
echo Number::currency(10252 / 1000, 'LYD', 3); // $1.025
echo Number::currency(10252 / 100, 'USD', 2); // $10.25

you can now do

$amount = 10252; // from database, request, etc.
echo Number::currency(10252, 'LYD', isFractionUnit: true); // $1.025
echo Number::currency(10252, 'USD', isFractionUnit: true); // $10.25

and don't need to know, how many Libyan dirham is one dinar (did you even know that? Me neither)

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[shaedrich]

There was 1 failure:

1. Illuminate\Tests\Support\SupportNumberTest::testToCurrency
   Failed asserting that two strings are identical.
   --- Expected
   +++ Actual
   @@ @@
   -'LYD 10.252'
   +'LYD 10.252'

I must be blind 🤨

[PerryvanderMeer]

@shaedrich You might encounter some non-breaking whitespaces instead of regular spaces.

[shaedrich]

Yeah, that was my assumption as well. I pasted it into VSCode with the respective setting turned on—still identical. I replaced Expected value with Actual value in the test file—git didn't register a change in the file 🤔 🤨 🕵🏻

[shaedrich]

But that fixed it—thanks @PerryvanderMeer 👍🏻