Fix overridable `OneShot.isStickable(key)` function

Now that it's not a `static` class function, we need to use a different
invocation, and we can't declare `isStickableDefault()` with the `always_inline`
attribute, or the user's override won't be able to call it because there will be
nothing to link to.

Signed-off-by: Michael Richters <gedankenexperimenter@gmail.com>

plugins/Kaleidoscope-OneShot/src/kaleidoscope/plugin/OneShot.cpp

@@ -89,7 +89,6 @@ bool OneShot::isStickable(Key key) const {
   return isStickableDefault(key);
 }
 
-__attribute__((always_inline)) inline
 bool OneShot::isStickableDefault(Key key) const {
   int8_t n;
   // If the key is either a keyboard modifier or a layer shift, we check to see

tests/issues/1061/1061.ino

@@ -51,10 +51,10 @@ class OneShotInsert : public Plugin {
   }
 };
 
-bool OneShot::isStickable(Key key) {
+bool OneShot::isStickable(Key key) const {
   if (key == Key_LeftAlt)
     return false;
-  return OneShot::isStickableDefault(key);
+  return isStickableDefault(key);
 }
 
 } // namespace plugin