test(asm): pin the flag-list TEXT shapes against the toolchain

Assisted-by: GLM 5.3 Flash

parser/flags_test.go

@@ -53,7 +53,10 @@ func TestTextFlagsExpression(t *testing.T) {
 		{"(NOSPLIT|NOFRAME)", []string{"NOSPLIT", "NOFRAME"}, 516},
 		{"NOSPLIT|4", []string{"NOSPLIT"}, 4},
 		{"NOSPLIT&DUPOK", nil, 0},
-		{"$NOSPLIT", []string{"NOSPLIT"}, 4},
+		// The immediate spelling is the toolchain's "expected integer
+		// constant" on the assembly path; the raw view reads nothing from
+		// it and stays quiet.
+		{"$NOSPLIT", nil, 0},
 	} {
 		txt := parseTextHeader(t, "TEXT \u00b7f(SB), "+c.operand+", $0")
 		if !slices.Equal(txt.Flags, c.wantFlag) {