[FIR] Fix default message for PRIVATE_CLASS_MEMBER_FROM_INLINE

Error message was only printing the calling inline function and not the
class member being accessed. Make sure both pieces for diagnostic
information are included in the error message.

#KT-58972 Fixed

compiler/testData/diagnostics/tests/inline/nonPublicMember/kt55179.diag.txt

@@ -0,0 +1,6 @@
+/kt55179.kt:16:5: error: non-private inline function cannot access members of private classes: 'public constructor Foo() defined in Foo'
+    Foo()
+    ^
+/kt55179.kt:17:9: error: non-private inline function cannot access members of private classes: 'public companion object defined in Foo'
+    Foo.Companion
+        ^

compiler/testData/diagnostics/tests/inline/nonPublicMember/kt55179.fir.diag.txt

@@ -0,0 +1,7 @@
+/kt55179.fir.kt:(217,223): warning: Expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types
+
+/kt55179.fir.kt:(240,243): error: Non-private inline function 'fun foo(): Unit' cannot access members of private classes: 'constructor(): Foo'
+
+/kt55179.fir.kt:(254,263): error: Non-private inline function 'fun foo(): Unit' cannot access members of private classes: 'companion  object Companion : Any'
+
+/kt55179.fir.kt:(272,280): error: Non-private inline function 'fun foo(): Unit' cannot access members of private classes: 'fun buildFoo(): Foo'

compiler/testData/diagnostics/tests/inline/nonPublicMember/kt55179.fir.kt

@@ -1,5 +1,6 @@
 // ISSUE: KT-55179
 // SKIP_TXT
+// !RENDER_DIAGNOSTICS_FULL_TEXT
 
 private class Foo {
     companion object {

compiler/testData/diagnostics/tests/inline/nonPublicMember/kt55179.kt

@@ -1,5 +1,6 @@
 // ISSUE: KT-55179
 // SKIP_TXT
+// !RENDER_DIAGNOSTICS_FULL_TEXT
 
 private class Foo {
     companion object {