Fix inferred type expressions (#1806)

Co-authored-by: amylizzle <[email protected]>
Co-authored-by: wixoa <[email protected]>

Content.Tests/DMProject/Tests/Expression/InferredType.dm

@@ -0,0 +1,10 @@
+// issue #1752
+
+/proc/RunTest()
+    var/matrix/M1 = new()
+    var/matrix/M2 = new()
+
+    (M1 * M2).Multiply(1)
+
+    var/list/test = list(M1,M2)
+    (locate(/matrix) in test).Multiply(1)

DMCompiler/DM/Expressions/Binary.cs

@@ -7,6 +7,7 @@ internal abstract class BinaryOp(Location location, DMExpression lhs, DMExpressi
         protected DMExpression LHS { get; } = lhs;
         protected DMExpression RHS { get; } = rhs;
         public override DMComplexValueType ValType => LHS.ValType;
+        public override bool PathIsFuzzy => true;
     }
 
     #region Simple

DMCompiler/DM/Expressions/Builtins.cs

@@ -154,6 +154,7 @@ public override void EmitPushValue(DMObject dmObject, DMProc proc) {
     sealed class Locate : DMExpression {
         private readonly DMExpression _path;
         private readonly DMExpression? _container;
+        public override bool PathIsFuzzy => true;
 
         public Locate(Location location, DMExpression path, DMExpression? container) : base(location) {
             _path = path;