deprecate Array(shape...)-like constructors to Array(uninitialized, shape...)

[Sacha0]

This pull request deprecates uninitialized-Array constructors of the form Array[{T,N}](shape...) in favor of Array[{T,N}](uninitialized, shape...) equivalents. For background, please see #24595. Best!

(This pull request should not pass CI till the remaining Array(shape...) call replacement pull requests merge, hence the WIP.)

[fredrikekre]

error during bootstrap:
LoadError(at "coreimg.jl" line 3: LoadError(at "bitarray.jl" line 1053: MethodError(f=typeof(Core.Inference.convert)(), args=(Array{UInt64, 1}, 0), world=0x00000000000008fa)))
rec_backtrace at /home/travis/build/JuliaLang/julia/src/stackwalk.c:94
record_backtrace at /home/travis/build/JuliaLang/julia/src/task.c:246
jl_throw at /home/travis/build/JuliaLang/julia/src/task.c:577
jl_method_error_bare at /home/travis/build/JuliaLang/julia/src/gf.c:1507
jl_method_error at /home/travis/build/JuliaLang/julia/src/gf.c:1525
jl_lookup_generic_ at /home/travis/build/JuliaLang/julia/src/gf.c:1987 [inlined]
jl_apply_generic at /home/travis/build/JuliaLang/julia/src/gf.c:2007

[Sacha0]

Comprehension lowering required updating, and a similar(arraytype, shape...) method as well. Those updates fix bootstrap/build locally. What say you now, CI?

[Sacha0]

Thoughts on the similar(funcortype, inds...) = funcortype(inds...) -> ... = funcortype(uninitialized, inds...) change, @timholy? Thanks!

[Sacha0]

Caught another necessary lowering change, fixed a few additional Array(shape...)-like calls that slipped by previously, switched to a more conservative similar(typeorfunc, shape) change, and polished the deprecations a bit. What say you now, CI?

Pending CI this pull request should now be in shape. (Though merging #24785 will introduce a minor conflict here.) So absent objections or requests for time, I plan to merge these changes tomorrow. Best!

[Sacha0]

Thanks all! :)