Fix metadata deserialization for context receivers with type table

In DeserializedClassDescriptor and MemberDeserializer, only the
`contextReceiverTypeList` field was used, and not
`contextReceiverTypeIdList` which is used when `-Xuse-type-table` is
enabled. The convention is to use a bunch of utilities declared in
`protoTypeTableUtil.kt` which deal with both methods of reading types.
Also, simplify the deserialization code in FIR (which was correct for
some reason).

compiler/fir/analysis-tests/testData/loadCompiledKotlin/contextReceivers/SimpleContextReceivers.txt

@@ -0,0 +1,21 @@
+context(R|test/A|)
+public final fun g(): R|kotlin/Unit|
+
+context(R|test/B|)
+public final val h: R|kotlin/Int|
+    public get(): R|kotlin/Int|
+
+public abstract interface A : R|kotlin/Any| {
+}
+
+public abstract interface B : R|kotlin/Any| {
+}
+
+context(R|test/A|)
+public final class C : R|kotlin/Any| {
+    context(R|test/B|)
+    public final fun f(): R|kotlin/Unit|
+
+    public constructor(): R|test/C|
+
+}