Merge bitcoin/bitcoin#22232: refactor: Pass interpreter flags as uint32_t instead of signed int

fa621ededd refactor: Pass script verify flags as uint32_t (MarcoFalke)

Pull request description:

  The flags are cast to unsigned in the interpreter anyway, so avoid the confusion (and fuzz crashes) by just passing them as unsigned from the beginning.

  Also, the flags are often inverted bit-wise with the `~` operator, which also works on signed integers, but might cause confusion as the sign bit is flipped.

  Fixes #22233

ACKs for top commit:
  theStack:
    Concept and code review ACK fa621ededd
  kristapsk:
    ACK fa621ededd
  jonatack:
    ACK fa621ededd

Tree-SHA512: ea0720f32f823fa7f075309978672aa39773c6019d12b6c1c9d611fc1983a76115b7fe2a28d50814673bb6415c311ccc05b99d6e871575fb6900faf75ed17769

src/script/interpreter.h

@@ -39,8 +39,7 @@ enum
  *  All flags are intended to be soft forks: the set of acceptable scripts under
  *  flags (A | B) is a subset of the acceptable scripts under flag (A).
  */
-enum
-{
+enum : uint32_t {
     SCRIPT_VERIFY_NONE      = 0,
 
     // Evaluate P2SH subscripts (BIP16).