Analytics charts now show currency symbols on axes and tooltips

Chart axes and tooltips for money metrics in Analytics now show currency symbols.

When viewing revenue and payment data on the Analytics page, the axis labels and hover tooltips were rendering bare numbers — 2060000 instead of A$2,060,000, or 127,000 instead of A$122.3K. Table cells and stat cards on the same screen showed correctly formatted values with currency symbols; the chart rendering layer was the one surface where currency formatting was missing.

This fix applies across all money metrics on the Analytics Overview and Reports sections. Axis labels, tick marks, and hover tooltips for revenue, payment, and subscription-value charts now use the same currency-formatted display as the rest of the page.