[Core] Improve error messages with vformat

[AThousandShips]

Limited to cases where the message contained more than one substitution, can expand to all cases in core but these are the more hard to read, keeping it in small batches and starting with this. Also made some minor improvements to the messages like adding ' and trailing periods in some cases to improve readability.

Left the ones in string.cpp alone as they would likely cause recursion since at least some String methods are used in vformat itself.

See: #91521 (comment)

[fire]

I approve of the general pattern of replacing string concatenation with vformat format strings.

[AThousandShips]

I'll look at the scope of adding all single case concatenations as well for completeness, and see if I'll just add them to this or do it as a potential future improvement

Edit: They are quite extensive so leaving them for now until this has gotten more approval

[AThousandShips]

Will try some ideas for improving the performance of vformat, similar to my other performance improvements in String, should make it even more relevant to use it for these cases beyond just readability

[Calinou]

Code looks good to me.

[AThousandShips]

Will look at adding the remaining cases with fewer concatenations, but won't have the time today

[Repiteo]

Won't merge until those other concatenation cases you mentioned are addressed, but everything so far looks good!

[AThousandShips]

Will try to get to them this week

[AThousandShips]

That covers most cases I belive, left some cases where I'm unsure about the safety, like in ustring.cpp, and also left ip_address.cpp as it didn't include variant.h and leaving it simple

[Repiteo]

Thanks!

[AThousandShips]

Thank you!