feat(partnership): set password email template (#86366)

Currently for partnerships, when a new account was created we were
sending recover account email asking users to set their password. Half
of the logic needed to send another email was done, but it was never
finished.

Now we have a new email template where we ask user to set their password
upon account creation

---------

Co-authored-by: Fabian Schindler <fabian.schindler@sentry.io>

src/sentry/templates/sentry/emails/set_password.html

@@ -0,0 +1,20 @@
+{% extends "sentry/emails/base.html" %}
+
+{% load i18n %}
+
+{% block main %}
+    <p>Welcome to Sentry. We created your account, you just need to set a password and you'll be all set.</p>
+
+    <p><a href="{{ url|safe }}" class="btn">Set your Password</a></p>
+
+    <p>Once you are in, you can:</p>
+    <ul>
+        <li>Monitor your code in production</li>
+        <li>Get realtime notifications for errors and latency problems</li>
+        <li>Have all the context to debug critical issues</li>
+    </ul>
+
+    <p>If you weren't expecting this email, please ignore it.</p>
+
+    <p>The Sentry Team</p>
+{% endblock %}

src/sentry/templates/sentry/emails/set_password.txt

@@ -0,0 +1,12 @@
+Welcome to Sentry. We created your account, you just need to set a password and you'll be all set.
+
+{{ url|safe }}
+
+Once you are in, you can:
+- Monitor your code in production
+- Get realtime notifications for errors and latency problems
+- Have all the context to debug critical issues
+
+If you weren't expecting this email, please ignore it.
+
+The Sentry Team

src/sentry/users/models/lostpasswordhash.py

@@ -58,6 +58,10 @@ def send_relocate_account_email(
     ) -> None:
         cls._send_email("relocate_account", user, hash, {"orgs": orgs})
 
+    @classmethod
+    def send_set_password_email(cls, user: User | RpcUser, hash: str, **kwargs: Any) -> None:
+        cls._send_email("set_password", user, hash, extra=kwargs)
+
     @classmethod
     def _send_email(cls, mode: str, user: User | RpcUser, hash: str, extra: dict[str, Any]) -> None:
         from sentry import options
@@ -75,6 +79,7 @@ def _send_email(cls, mode: str, user: User | RpcUser, hash: str, extra: dict[str
         subject = "Password Recovery"
         template = "recover_account"
         if mode == "set_password":
+            subject = "Set Password for your Sentry.io Account"
             template = "set_password"
         elif mode == "relocate_account":
             template = "relocate_account"