JVM_IR: avoid redundant accessors in private inline funs

Their call sites are all in the same file, so we can check whether the
declarations used in the inline function are accessible from all the
places where it will be inlined.

 #KT-48736 Fixed

compiler/testData/codegen/box/syntheticAccessors/packagePrivateInPrivateInline.kt

@@ -0,0 +1,19 @@
+// TARGET_BACKEND: JVM
+// FILE: test/J.java
+package test;
+
+public class J {
+    String packagePrivate = "OK";
+}
+
+// FILE: test/main.kt
+package test
+
+object O {
+    fun box() = privateInline()
+
+    // no accessor needed - the only call site is in the same package
+    private inline fun privateInline(): String = J().packagePrivate
+}
+
+fun box() = O.box()

compiler/testData/codegen/bytecodeText/noAccessorForProtectedInSamePackagePrivateInline.kt

@@ -0,0 +1,17 @@
+package a
+
+open class A {
+    protected fun protectedFun(): String = "OK"
+}
+
+class BSamePackage: A() {
+    // known to only be called within `BSamePackage`, so accessors are redundant
+    private inline fun test(): String = protectedFun()
+
+    fun onlyTestCallSite() = test()
+}
+
+// JVM_TEMPLATES
+// 2 INVOKESTATIC a/BSamePackage.access
+// JVM_IR_TEMPLATES
+// 0 INVOKESTATIC a/BSamePackage.access