Ignoring not static final fields.

Added tests with class object of trait and val inside object.

jps-plugin/testData/incremental/traitClassObjectConstantChanged/build.log

@@ -0,0 +1,14 @@
+Cleaning output files:
+out/production/module/test/Trait$$TImpl.class
+out/production/module/test/Trait$object.class
+out/production/module/test/Trait.class
+End of files
+Compiling files:
+src/const.kt
+End of files
+Cleaning output files:
+out/production/module/test/Usage.class
+End of files
+Compiling files:
+src/usage.kt
+End of files

jps-plugin/testData/incremental/traitClassObjectConstantChanged/const.kt

@@ -0,0 +1,8 @@
+package test
+
+trait Trait {
+    class object {
+        // Old and new constant values are different, but their hashes are the same
+        val CONST = "BF"
+    }
+}

jps-plugin/testData/incremental/traitClassObjectConstantChanged/const.kt.new

@@ -0,0 +1,8 @@
+package test
+
+trait Trait {
+    class object {
+        // Old and new constant values are different, but their hashes are the same
+        val CONST = "Ae"
+    }
+}

jps-plugin/testData/incremental/traitClassObjectConstantChanged/usage.kt

@@ -0,0 +1,4 @@
+package test
+
+deprecated(Trait.CONST + Trait.CONST)
+class Usage