[NFC] Fix the use of "strict" in subtypes.h (#5804)

Previously we incorrectly used "strict" to mean the immediate subtypes of a
type, when in fact a strict subtype of a type is any subtype excluding the type
itself. Rename the incorrect `getStrictSubTypes` to `getImmediateSubTypes`,
rename the redundant `getAllStrictSubTypes` to `getStrictSubTypes`, and rename
the redundant `getAllSubTypes` to `getSubTypes`. Fixing the capitalization of
"SubType" to "Subtype" is left as future work.

1 files changed, 3 insertions, 3 deletions

diff --git a/test/gtest/type-builder.cpp b/test/gtest/type-builder.cpp
index 84b9f33c8..0744e2b5e 100644
--- a/test/gtest/type-builder.cpp
+++ b/test/gtest/type-builder.cpp
@@ -853,13 +853,13 @@ TEST_F(TypeTest, TestSubTypes) {
     {Type(built[0], Nullable), Type(built[1], Nullable)},
     wasmBuilder.makeNop()));
   SubTypes subTypes(wasm);
-  auto subTypes0 = subTypes.getStrictSubTypes(built[0]);
+  auto subTypes0 = subTypes.getImmediateSubTypes(built[0]);
   EXPECT_TRUE(subTypes0.size() == 1 && subTypes0[0] == built[1]);
-  auto subTypes0Inclusive = subTypes.getAllSubTypes(built[0]);
+  auto subTypes0Inclusive = subTypes.getSubTypes(built[0]);
   EXPECT_TRUE(subTypes0Inclusive.size() == 2 &&
               subTypes0Inclusive[0] == built[1] &&
               subTypes0Inclusive[1] == built[0]);
-  auto subTypes1 = subTypes.getStrictSubTypes(built[1]);
+  auto subTypes1 = subTypes.getImmediateSubTypes(built[1]);
   EXPECT_EQ(subTypes1.size(), 0u);
 }