[IMP] l10n_in: set partner state in Place of supply only when journal type is sale

Currently, the Place of supply value is set from the partner state for all journal types.

So in this commit, we set the partner state in `Place of supply` only when
the journal type is a sale. Also added the country domain in XML view.

Part-of: odoo/odoo#109717

addons/l10n_in/models/account_invoice.py

@@ -37,10 +37,10 @@ class AccountMove(models.Model):
         for record in self:
             record.l10n_in_gst_treatment = record.partner_id.l10n_in_gst_treatment
 
-    @api.depends('partner_id')
+    @api.depends('partner_id', 'company_id')
     def _compute_l10n_in_state_id(self):
         for move in self:
-            if move.country_code == 'IN':
+            if move.country_code == 'IN' and move.journal_id.type == 'sale':
                 country_code = move.partner_id.country_id.code
                 if country_code == 'IN':
                     move.l10n_in_state_id = move.partner_id.state_id
@@ -48,6 +48,8 @@ class AccountMove(models.Model):
                     move.l10n_in_state_id = self.env.ref('l10n_in.state_in_oc', raise_if_not_found=False)
                 else:
                     move.l10n_in_state_id = move.company_id.state_id
+            elif move.country_code == 'IN' and move.journal_id.type == 'purchase':
+                move.l10n_in_state_id = move.company_id.state_id
             else:
                 move.l10n_in_state_id = False
 

addons/l10n_in/views/account_invoice_views.xml

@@ -7,7 +7,7 @@
         <field name="arch" type="xml">
             <xpath expr="//field[@name='ref']" position="after">
                 <field name="country_code" invisible="1"/>
-                <field name="l10n_in_state_id"
+                <field name="l10n_in_state_id" domain="[('country_id.code', '=', 'IN')]"
                     attrs="{'invisible': ['|', ('country_code', '!=', 'IN'), ('move_type', '=', 'entry')], 'required': [('country_code', '=', 'IN'), ('move_type', '!=', 'entry')], 'readonly': [('state', '!=', 'draft')]}"/>
                 <field name="l10n_in_gst_treatment"
                     attrs="{'invisible': ['|', ('country_code', '!=', 'IN'), ('move_type', '=', 'entry')], 'required': [('country_code', '=', 'IN'), ('move_type', '!=', 'entry')], 'readonly': [('state', '!=', 'draft')]}"/>