[FIX] charts: translate gauge chart titles

Currently the demo dashboards in Odoo have their gauge chart titles not
translated, although they are exported for translation in the .pot file.

In this commit we make them go through the `_t()` function, just like
the titles of the scorecard charts.

closes #5376

Task: 4421055
X-original-commit: eb99bab
Signed-off-by: Adrien Minne (adrm) <[email protected]>

Author: dylankiss

src/helpers/figures/charts/gauge_chart.ts

@@ -5,6 +5,7 @@ import {
   DEFAULT_GAUGE_UPPER_COLOR,
 } from "../../../constants";
 import { BasePlugin } from "../../../plugins/base_plugin";
+import { _t } from "../../../translation";
 import {
   AddColumnsRowsCommand,
   ApplyRangeChange,
@@ -316,7 +317,11 @@ export function createGaugeChartRuntime(chart: GaugeChart, getters: Getters): Ga
 
   return {
     background: getters.getStyleOfSingleCellChart(chart.background, dataRange).background,
-    title: chart.title ?? { text: "" },
+    title: {
+      ...chart.title,
+      // chart titles are extracted from .json files and they are translated at runtime here
+      text: _t(chart.title.text ?? ""),
+    },
     minValue: {
       value: minValue,
       label: formatValue(minValue, { locale, format }),