enable class content serialization in ReadClassDataTest; add test for function params with upper bounds

compiler/testData/readClass/fun/FunParamUpperClassBound.kt

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+namespace test
+
+fun <A : java.lang.Number> uno() = 1

compiler/testData/readClass/fun/FunParamUpperClassInterfaceBound.kt

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+namespace test
+
+fun <A> tres() where A : java.lang.Number, A : java.lang.CharSequence = 1

compiler/testData/readClass/fun/FunParamUpperInterfaceBound.kt

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+namespace test
+
+fun <A : java.lang.CharSequence> dos() = 1

compiler/testData/readClass/fun/FunParamUpperInterfaceClassBound.kt

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+namespace test
+
+fun <A> cuatro() where A : java.lang.CharSequence, A : java.lang.Number = 1