feat(t32)!: update parser and queries (#8276)

`trace32_hll_variable` has been removed from the grammar. The
queries are now capturing `symbol` instead. `symbol` is highlighted
as variable or constant.

tests/query/highlights/t32/keywords.cmm

@@ -109,7 +109,7 @@ SUBROUTINE start_debug
     COVerage.ListModule %MULTI.OBC \sieve
 ;    ^ @keyword
 ;                        ^ @constant.builtin
-;                                  ^ @string.special.symbol
+;                                  ^ @variable
 
     Var.DRAW flags[0..16] /Alternate 3
 ;    ^ @keyword

tests/query/highlights/t32/literals.cmm

@@ -20,7 +20,7 @@ DATA.SET P:&HEAD+0x4 %LONG DATA.LONG(EA:&HEAD+0x4)&0xFFFFFF
 ;                                    ^ @constant.builtin
 
 List `main`
-;    ^ @string.special.symbol
+;    ^ @variable
 
 &range = 'a'--'z'||'0'--'9'
 ;        ^ @character

tests/query/highlights/t32/var.cmm

@@ -1,7 +1,7 @@
 Var.NEWGLOBAL char[4][32] \myarr
 ; <- @keyword
 ;             ^ @type.builtin
-;                          ^ @variable.builtin
+;                          ^ @variable
 LOCAL &i &data
 
 &data="zero|one|two|three"
@@ -12,20 +12,20 @@ WHILE &i<4
     PRIVATE &val
     &val=STRing.SPLIT("&data","|",&i)
     Var.Assign \myarr[&i]="&val"
-;              ^ @variable.builtin
+;              ^ @variable
 ;                        ^ @operator
     &i=&i+1.
 )
 
 Var.NEWLOCAL \x
 ; <- @keyword
-;             ^ @variable.builtin
+;             ^ @variable
 Var.set \x=func3(5,3)
-;       ^ @variable.builtin
+;       ^ @variable
 ;          ^ @function.call
 ;                ^ @number
 PRINT Var.VALUE(\x)
-;               ^ @variable.builtin
+;               ^ @variable
 PRINT Var.VALUE('a')
 ;               ^ @character
 Var.Assign (*ap)[2..4] = &a