[FIX] l10n_in: fix empty HSN on invoice report & missing HSN column
[FIX] l10n_in: fix empty HSN on invoice report & missing HSN column

Reproduce this bug:
 - Create 2 companies: Indian and Belgian for example
 - Install accounting & l10n_in
 - Create an invoice & print it

The `<td>` dedicated to the HSN is always present so there is a
cosmetic issue for the not indian companies: the table is a *little*
bit too large. This issue is caused by a missing conditional statement
on the `<td>` who is present on the HSN `<th>`.

OPW-2090663

closes odoo/odoo#39930

X-original-commit: 8d421c703796c0d47233ba0bb0318c829b2f0159
Signed-off-by: Jason Van Malder <35bd32c57c0c5fd64e02a1acdd25d0ec0304975b@users.noreply.github.com>

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