JavaScript Backend: fix typePrimRep failure

Description

Test: T13244

Compile failed (exit code 1) errors were:
js-unknown-ghcjs-ghc: panic! (the 'impossible' happened)
  GHC version 9.5.20220920:
	runtimeRepPrimRep
  typePrimRep (Unboxed Int :: TYPE (Rep Int))
  Rep Int
  Call stack:
      CallStack (from HasCallStack):
        callStackDoc, called at compiler/GHC/Utils/Panic.hs:188:37 in ghc:GHC.Utils.Panic
        pprPanic, called at compiler/GHC/Types/RepType.hs:617:5 in ghc:GHC.Types.RepType
  CallStack (from HasCallStack):
    panic, called at compiler/GHC/Utils/Error.hs:442:29 in ghc:GHC.Utils.Error


Please report this as a GHC bug:  https://www.haskell.org/ghc/reportabug


*** unexpected failure for T13244(normal)

Test T13822:

Compile failed (exit code 1) errors were:
js-unknown-ghcjs-ghc: panic! (the 'impossible' happened)
  GHC version 9.5.20220920:
	kindPrimRep
  IK 'STAR
  typePrimRep (I a_avj :: IK 'STAR)
  Call stack:
      CallStack (from HasCallStack):
        callStackDoc, called at compiler/GHC/Utils/Panic.hs:188:37 in ghc:GHC.Utils.Panic
        pprPanic, called at compiler/GHC/Types/RepType.hs:587:5 in ghc:GHC.Types.RepType
  CallStack (from HasCallStack):
    panic, called at compiler/GHC/Utils/Error.hs:442:29 in ghc:GHC.Utils.Error


Please report this as a GHC bug:  https://www.haskell.org/ghc/reportabug


*** unexpected failure for T13822(normal)

Tests affected by this issue

• T13105
• T13244
• T13822 !10261 (closed)
• T14749 !10261 (closed)
• Dep3
• KindEqualities2