tint/sem: Rename Expression to ValueExpression

ast::IdentifierExpression may also resolve to a type or core enumerator

Bug: tint:1810
Change-Id: I85e3bea67e1146215079ec47430784f2fb39043d
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/118402
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: James Price <jrprice@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
diff --git a/src/tint/transform/decompose_strided_matrix.cc b/src/tint/transform/decompose_strided_matrix.cc
index 15cdf62..773cfdf 100644
--- a/src/tint/transform/decompose_strided_matrix.cc
+++ b/src/tint/transform/decompose_strided_matrix.cc
@@ -19,8 +19,8 @@
 #include <vector>
 
 #include "src/tint/program_builder.h"
-#include "src/tint/sem/expression.h"
 #include "src/tint/sem/member_accessor_expression.h"
+#include "src/tint/sem/value_expression.h"
 #include "src/tint/transform/simplify_pointers.h"
 #include "src/tint/utils/hash.h"
 #include "src/tint/utils/map.h"