Feature/optimize warnings (#12821)

# Description

tweak some wipe tower related warnings to reduce confusion

1. Skip flushing volume validation for multi-tool printers
2. check precise_z_height and enable_prime_tower conflicts in print
validate

# Screenshots/Recordings/Graphs

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## Tests

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> Please describe the tests that you have conducted to verify the
changes made in this PR.
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src/libslic3r/Print.cpp

@@ -1235,6 +1235,16 @@ StringObjectException Print::validate(StringObjectException *warning, Polygons*
     }
 
     if (m_config.enable_prime_tower) {
+        for (const PrintObject* object : m_objects) {
+            if (object->config().precise_z_height.value && warning != nullptr) {
+                StringObjectException warningtemp;
+                warningtemp.string     = L("Enabling both precise Z height and the prime tower may cause slicing errors.");
+                warningtemp.opt_key    = "precise_z_height";
+                warningtemp.is_warning = true;
+                *warning               = warningtemp;
+                break;
+            }
+        }
     } else {
         if (m_config.enable_wrapping_detection && warning!=nullptr) {
             StringObjectException warningtemp;

src/slic3r/GUI/GLCanvas3D.cpp

@@ -9797,6 +9797,10 @@ void GLCanvas3D::_set_warning_notification(EWarning warning, bool state)
 
 bool GLCanvas3D::is_flushing_matrix_error() {
 
+    // Flushing volumes only apply to single-extruder multi-material (SEMM) and BBL printers
+    if (!Sidebar::should_show_SEMM_buttons())
+        return false;
+
     const auto                &project_config = wxGetApp().preset_bundle->project_config;
     const std::vector<double> &config_matrix  = (project_config.option<ConfigOptionFloats>("flush_volumes_matrix"))->values;
     const std::vector<double> &config_multiplier = (project_config.option<ConfigOptionFloats>("flush_multiplier"))->values;

src/slic3r/GUI/Tab.cpp

@@ -1589,7 +1589,7 @@ void Tab::on_value_change(const std::string& opt_key, const boost::any& value)
         }
         bool is_precise_z_height = m_config->option<ConfigOptionBool>("precise_z_height")->value;
         if (boost::any_cast<bool>(value) && is_precise_z_height) {
-            MessageDialog dlg(wxGetApp().plater(), _L("Enabling both precise Z height and the prime tower may cause the size of prime tower to increase. Do you still want to enable?"),
+            MessageDialog dlg(wxGetApp().plater(), _L("Enabling both precise Z height and the prime tower may cause slicing errors. Do you still want to enable?"),
                 _L("Warning"), wxICON_WARNING | wxYES | wxNO);
             if (dlg.ShowModal() == wxID_NO) {
                 DynamicPrintConfig new_conf = *m_config;
@@ -1631,7 +1631,7 @@ void Tab::on_value_change(const std::string& opt_key, const boost::any& value)
     if (opt_key == "precise_z_height") {
         bool wipe_tower_enabled = m_config->option<ConfigOptionBool>("enable_prime_tower")->value;
         if (boost::any_cast<bool>(value) && wipe_tower_enabled) {
-            MessageDialog dlg(wxGetApp().plater(), _L("Enabling both precise Z height and the prime tower may cause the size of prime tower to increase. Do you still want to enable?"),
+            MessageDialog dlg(wxGetApp().plater(), _L("Enabling both precise Z height and the prime tower may cause slicing errors. Do you still want to enable precise Z height?"),
                 _L("Warning"), wxICON_WARNING | wxYES | wxNO);
             if (dlg.ShowModal() == wxID_NO) {
                 DynamicPrintConfig new_conf = *m_config;