[FIX] web: allow to use the hour:minute on mobile for FloatTimeField

Steps to reproduce
==================

- Use an android phone
- Go to Timesheets
- Click on Add a line
- Click on the Hours Spent input

The keyboard is missing the colon `:` symbol

It is then only possible the enter a time in the float format.

Cause of the issue
==================

The inputmode=decimal attribute prevents a user from entering a `:`
symbol

Note that this doesn't happen on IOS, since the inputmode is ignored for
other reasons.

opw-3278089

closes odoo/odoo#120697

Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>

addons/web/static/src/views/fields/float_time/float_time_field.xml

@@ -3,7 +3,7 @@
 
     <t t-name="web.FloatTimeField" owl="1">
         <span t-if="props.readonly" t-esc="formattedValue" />
-        <input t-else="" t-att-id="props.id" t-att-type="props.inputType" t-ref="numpadDecimal" t-att-placeholder="props.placeholder" inputmode="decimal" class="o_input" />
+        <input t-else="" t-att-id="props.id" t-att-type="props.inputType" t-ref="numpadDecimal" t-att-placeholder="props.placeholder" class="o_input" />
     </t>
 
 </templates>

addons/web/static/tests/views/fields/float_time_field_tests.js

@@ -176,4 +176,19 @@ QUnit.module("Fields", (hooks) => {
             "Placeholder"
         );
     });
+
+    QUnit.test("float_time field does not have an inputmode attribute", async function (assert) {
+        await makeView({
+            serverData,
+            type: "form",
+            resModel: "partner",
+            arch: `
+                <form>
+                    <field name="qux" widget="float_time" placeholder="Placeholder"/>
+                </form>`,
+        });
+
+        const input = target.querySelector(".o_field_widget[name='qux'] input");
+        assert.notOk(input.attributes.inputMode);
+    });
 });