Possibly incorrect `status --outdated` output while using a PR branch of a registered package

[jishnub]

Based on this discourse discussion.

(@v1.8) pkg> activate --temp
  Activating new project at `/tmp/jl_LRkm83`

(jl_LRkm83) pkg> add https://github.com/JuliaLinearAlgebra/MKL.jl#vs/lp64
    Updating git-repo `https://github.com/JuliaLinearAlgebra/MKL.jl`
   Resolving package versions...
    Updating `/tmp/jl_LRkm83/Project.toml`
  [33e6dc65] + MKL v0.4.5 `https://github.com/JuliaLinearAlgebra/MKL.jl#vs/lp64`
    Updating `/tmp/jl_LRkm83/Manifest.toml`
  [692b3bcd] + JLLWrappers v1.4.1
  [33e6dc65] + MKL v0.4.5 `https://github.com/JuliaLinearAlgebra/MKL.jl#vs/lp64`
  [9b87118b] + PackageCompiler v2.0.4
  [21216c6a] + Preferences v1.2.3
  [05181044] + RelocatableFolders v0.1.3
  [6c6a2e73] + Scratch v1.1.0
  [1d5cc7b8] + IntelOpenMP_jll v2018.0.3+2
  [856f044c] + MKL_jll v2022.0.0+0
  [0dad84c5] + ArgTools v1.1.1
  [56f22d72] + Artifacts
  [2a0f44e3] + Base64
  [ade2ca70] + Dates
  [f43a241f] + Downloads v1.6.0
  [7b1f6079] + FileWatching
  [b77e0a4c] + InteractiveUtils
  [4af54fe1] + LazyArtifacts
  [b27032c2] + LibCURL v0.6.3
  [76f85450] + LibGit2
  [8f399da3] + Libdl
  [37e2e46d] + LinearAlgebra
  [56ddb016] + Logging
  [d6f4376e] + Markdown
  [ca575930] + NetworkOptions v1.2.0
  [44cfe95a] + Pkg v1.8.0
  [de0858da] + Printf
  [3fa0cd96] + REPL
  [9a3f8284] + Random
  [ea8e919c] + SHA v0.7.0
  [9e88b42a] + Serialization
  [6462fe0b] + Sockets
  [fa267f1f] + TOML v1.0.0
  [a4e569a6] + Tar v1.10.0
  [cf7118a7] + UUIDs
  [4ec0a83e] + Unicode
  [e66e0078] + CompilerSupportLibraries_jll v0.5.0+0
  [deac9b47] + LibCURL_jll v7.73.0+4
  [29816b5a] + LibSSH2_jll v1.9.1+2
  [c8ffd9c3] + MbedTLS_jll v2.24.0+2
  [14a3606d] + MozillaCACerts_jll v2020.7.22
  [4536629a] + OpenBLAS_jll v0.3.17+2
  [83775a58] + Zlib_jll v1.2.12+1
  [8e850b90] + libblastrampoline_jll v4.0.0+0
  [8e850ede] + nghttp2_jll v1.41.0+1
  [3f19e933] + p7zip_jll v16.2.1+1

(jl_LRkm83) pkg> add FFTW
   Resolving package versions...
    Updating `/tmp/jl_LRkm83/Project.toml`
⌃ [7a1cc6ca] + FFTW v1.1.1
    Updating `/tmp/jl_LRkm83/Manifest.toml`
⌅ [621f4979] + AbstractFFTs v0.5.0
  [b99e7846] + BinaryProvider v0.5.10
  [8f4d0f93] + Conda v1.6.0
⌃ [7a1cc6ca] + FFTW v1.1.1
  [682c06a0] + JSON v0.21.2
  [69de0a69] + Parsers v2.2.1
  [189a3867] + Reexport v1.2.2
  [81def892] + VersionParsing v1.3.0
  [a63ad114] + Mmap
        Info Packages marked with ⌃ and ⌅ have new versions available, but those with ⌅ cannot be upgraded. To see why use `status --outdated`

(jl_LRkm83) pkg> status --outdated
Status `/tmp/jl_LRkm83/Project.toml`
⌃ [7a1cc6ca] FFTW v1.1.1 (<v1.4.5)
  [33e6dc65] MKL v0.4.5 `https://github.com/JuliaLinearAlgebra/MKL.jl#vs/lp64` (<v0.4.4)

Here it seems MKL shouldn't be reported as outdated, as I'm using a more recent version than the latest registered one.