[JVM_IR] Fix offsets in constant propagation optimization.

Loads of temporary variables that contain constants are replaced
with a copy of the constant. This avoids locals loads and stores.
However, the copy of the constant needs to have the offset of
the load and not of the original constant.

Fixes KT-41963.

idea/jvm-debugger/jvm-debugger-test/testData/stepping/stepOver/stepOverWhenWithInline.out

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JVM_IR
 LineBreakpoint created at stepOverWhenWithInline.kt:5
 Run Java
 Connected to the target VM
@@ -35,6 +34,7 @@ stepOverWhenWithInline.kt:63
 stepOverWhenWithInline.kt:75
 stepOverWhenWithInline.kt:76
 stepOverWhenWithInline.kt:75
+stepOverWhenWithInline.kt:80
 Disconnected from the target VM
 
 Process finished with exit code 0