feat(faith): info pip on streak counters explaining habit vs piety

New shared StreakInfoButton component — small (i) pip in the corner
of the rosary, Angelus, and Regina Cæli streak counters that opens a
modal with a short reflection on what the counter is for.

The text frames the streak as a tool for forming the *habit* of
regular prayer, not as a metric of piety; warns against mechanical
repetition with Mt 6:7 ("do not heap up empty phrases"); and grounds
the rest in CCC 2698 (rhythms of prayer), 2700 (heart present to him
to whom we are speaking), 2702 (body+spirit, habit forms us), and
2728 (the wounded pride that comes from treating prayer as personal
accomplishment).

Available in DE/EN/LA. Modal dismissable via X, click-outside, or
Escape; honours prefers-color-scheme.

Refactoring:
- StreakCounter and AngelusStreakCounter both render
  <StreakInfoButton {lang} /> instead of duplicating the pip+modal.
  Parents just declare position:relative as the anchor.
- AngelusStreakCounter is also used for Regina Cæli, so eastertide
  visitors get the same explanation there for free.

Bump 1.67.0 -> 1.67.1.

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "homepage",
-	"version": "1.67.0",
+	"version": "1.67.1",
 	"private": true,
 	"type": "module",
 	"scripts": {