[FIX] website_event_sale: enforce show tax inc/exc

**Current behavior:**
When enabling the option which specifies that products should
be displayed with their prices including tax, the dialog which
appears when a user is buying tickets for an event has a label
at the top of the window which lists the range of prices for
the available tickets. This price range does not include tax
irrespective of the status of the aforementioned option.

**Expected behavior:**
Displayed prices should adhere to the configuration which has
been selected in the db settings.

**Steps to reproduce:**
1. In the Settings app, give the `Display Product Prices`
     configuration setting the `Tax Included` selection

2. In the Event app, select an event and give at least one
     ticket type a nonzero cost

3. Go to the website, select the event which has the modified
     ticket prices, and click the Register button

4. The label atop the dialog window displays pretax prices

**Cause of the issue:**
The database setting does not affect anything in the XML which
is responsible for displaying this price range label.

**Fix:**
Set the all_prices value to be calculated respective to the
website setting that indicates whether to include or exclude
taxes when displaying prices.

opw-3734299

closes odoo#157277

X-original-commit: 4e0afec
Signed-off-by: Renaud Thiry (reth) <[email protected]>

Author: ethanrobv

addons/website_event_sale/views/website_event_templates.xml

@@ -37,7 +37,8 @@
         <span t-else="" class="badge text-bg-secondary text-uppercase fs-6">Free</span>
     </xpath>
     <xpath expr="//div[hasclass('o_wevent_price_range')]" position="inside">
-        <t t-set="all_prices" t-value="event.event_ticket_ids.mapped('price_reduce')"/>
+        <t t-if="website.show_line_subtotals_tax_selection == 'tax_excluded'" t-set="all_prices" t-value="event.event_ticket_ids.mapped('price_reduce')"/>
+        <t t-else="" t-set="all_prices" t-value="event.event_ticket_ids.mapped('price_reduce_taxinc')"/>
         <t t-set="lowest_price" t-value="min(all_prices)"/>
         <t t-set="highest_price" t-value="max(all_prices)"/>
         <t t-if="highest_price > 0">