refactor(modules): use ALabel dedup tooltip helper in simpleclock, systemd-failed-units, upower

simpleclock: migrate to updateLabelAndTooltip (label + tooltip share the
localtime arg; default tooltip falls back to the label format).
systemd-failed-units: use setLabelMarkup/setTooltipMarkup dedup setters;
label/tooltip formats are selected by different conditions so the combined
helper does not apply.
upower: use setLabelMarkup for the label; tooltip stays a custom GTK widget.
mpd already uses the dedup setters (label/tooltip use different truncated
args), so no change.

src/modules/simpleclock.cpp

@@ -18,18 +18,7 @@ auto waybar::modules::Clock::update() -> void {
   tzset();  // Update timezone information
   auto now = std::chrono::system_clock::now();
   auto localtime = fmt::localtime(std::chrono::system_clock::to_time_t(now));
-  auto text = fmt::format(fmt::runtime(format_), localtime);
+  updateLabelAndTooltip(format_, format_, localtime);
-  label_.set_markup(text);
-
-  if (tooltipEnabled()) {
-    if (config_["tooltip-format"].isString()) {
-      auto tooltip_format = config_["tooltip-format"].asString();
-      auto tooltip_text = fmt::format(fmt::runtime(tooltip_format), localtime);
-      label_.set_tooltip_markup(tooltip_text);
-    } else {
-      label_.set_tooltip_markup(text);
-    }
-  }
   // Call parent update
   ALabel::update();
 }

src/modules/systemd_failed_units.cpp

@@ -281,7 +281,7 @@ auto SystemdFailedUnits::update() -> void {
 
   last_status_ = overall_state_;
 
-  label_.set_markup(fmt::format(
+  setLabelMarkup(fmt::format(
       fmt::runtime(nr_failed_ == 0 ? format_ok_ : format_), fmt::arg("nr_failed", nr_failed_),
       fmt::arg("nr_failed_system", nr_failed_system_), fmt::arg("nr_failed_user", nr_failed_user_),
       fmt::arg("system_state", system_state_), fmt::arg("user_state", user_state_),
@@ -290,14 +290,14 @@ auto SystemdFailedUnits::update() -> void {
     std::string failed_list = BuildTooltipFailedList();
     auto tooltip_template = overall_state_ == "ok" ? tooltip_format_ok_ : tooltip_format_;
     if (!tooltip_template.empty()) {
-      label_.set_tooltip_markup(fmt::format(
+      setTooltipMarkup(fmt::format(
           fmt::runtime(tooltip_template), fmt::arg("nr_failed", nr_failed_),
           fmt::arg("nr_failed_system", nr_failed_system_),
           fmt::arg("nr_failed_user", nr_failed_user_), fmt::arg("system_state", system_state_),
           fmt::arg("user_state", user_state_), fmt::arg("overall_state", overall_state_),
           fmt::arg("failed_units_list", failed_list)));
     } else {
-      label_.set_tooltip_markup("");
+      setTooltipMarkup("");
     }
   }
   ALabel::update();

src/modules/upower.cpp

@@ -223,7 +223,7 @@ auto UPower::update() -> void {
     return;
   }
 
-  label_.set_markup(getText(upDevice_, format_));
+  setLabelMarkup(getText(upDevice_, format_));
   // Set icon
   if (upDevice_.icon_name == NULL || !gtkTheme_->has_icon(upDevice_.icon_name))
     upDevice_.icon_name = (char*)NO_BATTERY.c_str();