FIR: Update test data (repeated diagnostics)

They are a bit redundant, but it needs additional work to be done
to avoid them

idea/testData/checker/trivialHierarchyLoop.fir.kt

@@ -1,3 +1,3 @@
 class A : <error descr="[OTHER_ERROR] Unknown (other) error">A</error>() {}
 
-val x : Int = <error descr="[INITIALIZER_TYPE_MISMATCH] Initializer type mismatch: expected kotlin/Int, actual A">A()</error>
+val x : Int = <error descr="[INITIALIZER_TYPE_MISMATCH] Initializer type mismatch: expected kotlin/Int, actual A"><error descr="[TYPE_MISMATCH] Type mismatch: inferred type is A but kotlin/Int was expected">A()</error></error>