Fix #6862, fix #6863: Do not adapt contextual closures while inlining

Author: nicolasstucki

app.scala

@@ -0,0 +1,3 @@
+class Test {
+  foo()
+}

compiler/src/dotty/tools/dotc/typer/Inliner.scala

@@ -573,7 +573,7 @@ class Inliner(call: tpd.Tree, rhsToInline: tpd.Tree)(implicit ctx: Context) {
     /** An extractor for terms equivalent to `new C(args)`, returning the class `C`,
      *  a list of bindings, and the arguments `args`. Can see inside blocks and Inlined nodes and can
      *  follow a reference to an inline value binding to its right hand side.
- *
+     *
      *  @return    optionally, a triple consisting of
      *             - the class `C`
      *             - the arguments `args`

compiler/src/dotty/tools/dotc/typer/Typer.scala

@@ -2660,7 +2660,8 @@ class Typer extends Namer
           !isApplyProto(pt) &&
           pt != AssignProto &&
           !ctx.mode.is(Mode.Pattern) &&
-          !ctx.isAfterTyper) {
+          !ctx.isAfterTyper &&
+          !ctx.isInlineContext) {
         typr.println(i"insert apply on implicit $tree")
         typed(untpd.Select(untpd.TypedSplice(tree), nme.apply), pt, locked)
       }

lib.scala

@@ -0,0 +1,3 @@
+trait Ctx
+inline def foo(): Unit = given (x: Ctx) => ()
+def bar[T](b: given Ctx => Unit): Unit = ???

tests/pos/i6862/lib_1.scala

@@ -0,0 +1,3 @@
+trait Ctx
+inline def foo(): Unit = given (x: Ctx) => ()
+def bar[T](b: given Ctx => Unit): Unit = ???

tests/pos/i6862/test_1.scala

@@ -0,0 +1,3 @@
+class Test {
+  foo()
+}

tests/pos/i6863/lib_1.scala

@@ -0,0 +1,2 @@
+trait Ctx
+inline def foo(): Unit = given (x: Ctx) => ()

tests/pos/i6863/test_1.scala

@@ -0,0 +1,3 @@
+class Test {
+  foo()
+}