ui: Translate displayed block and category strings

We want the strings in the BlockDefinition to stay untranslated and only
translate them when being displayed in the UI.

addons/block_code/ui/blocks/block/block.gd

@@ -118,7 +118,7 @@ func _get_format_string() -> String:
 	if not definition:
 		return ""
 
-	return definition.display_template
+	return tr(definition.display_template)
 
 
 func _get_parameter_defaults() -> Dictionary:
@@ -217,10 +217,11 @@ func _get_tooltip(at_position: Vector2) -> String:
 	if not definition:
 		return ""
 
+	var description_tx := tr(definition.description)
 	if definition.variant_type == Variant.Type.TYPE_NIL:
-		return definition.description
+		return description_tx
 
-	return "{description}\n\nType: [b]{type}[/b]".format({"description": definition.description, "type": type_string(definition.variant_type)})
+	return "{description}\n\n{type_field}: [b]{type}[/b]".format({"description": description_tx, "type_field": tr("Type:"), "type": type_string(definition.variant_type)})
 
 
 func _make_custom_tooltip(for_text) -> Control:

addons/block_code/ui/picker/categories/block_category_button.gd

@@ -21,7 +21,7 @@ func _ready():
 		new_stylebox.bg_color = category.color
 		_panel.add_theme_stylebox_override("panel", new_stylebox)
 
-	_label.text = category.name
+	_label.text = tr(category.name)
 
 
 func _on_button_pressed():

addons/block_code/ui/picker/categories/block_category_display.gd

@@ -21,7 +21,6 @@ var _blocks: Dictionary  # String, Block
 
 
 func _ready():
-	_label.text = title  # category.name if category != null else ""
 	_update_label()
 	_update_blocks()
 
@@ -40,7 +39,7 @@ func _update_label():
 	if not _label:
 		return
 
-	_label.text = title
+	_label.text = tr(title)
 
 
 func _update_blocks():