More strict override check for data locations.

test/libsolidity/semanticTests/inheritance/dataLocation/external_public_calldata.sol

@@ -0,0 +1,18 @@
+abstract contract A {
+    function f(uint256[] calldata a) external virtual returns (uint256[] calldata);
+}
+
+contract B is A {
+    function f(uint256[] memory a) public override returns (uint256[] memory) {
+        return a;
+    }
+
+    function g(uint[] calldata x) public returns (uint256[] memory) {
+        return f(x);
+    }
+}
+// ====
+// compileViaYul: also
+// ----
+// f(uint256[]): 0x20, 2, 9, 8 -> 0x20, 2, 9, 8
+// g(uint256[]): 0x20, 2, 9, 8 -> 0x20, 2, 9, 8