Add activities for enabling/disabling "update new hosts to latest" (#37089)

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**Related issue:** Resolves #37088

# Details

This just adds the new activities for use in the API handler and the
front-end. I neglected to include this in the spec so I'm putting up a
quick PR to keep from adding to the back-end ticket scope.

# Checklist for submitter

No checklist items apply here; it just needs to implement what's laid
out in https://github.com/fleetdm/fleet/pull/35777/files.

---------

Co-authored-by: Juan Fernandez <juan@fleetdm.com>

server/fleet/activities.go

@@ -137,6 +137,8 @@ var ActivityDetailsList = []ActivityDetails{
 	ActivityTypeEditedIOSMinVersion{},
 	ActivityTypeEditedIPadOSMinVersion{},
 	ActivityTypeEditedWindowsUpdates{},
+	ActivityTypeEnabledMacosUpdateNewHosts{},
+	ActivityTypeDisabledMacosUpdateNewHosts{},
 
 	ActivityTypeReadHostDiskEncryptionKey{},
 
@@ -1117,6 +1119,44 @@ func (a ActivityTypeEditedMacOSMinVersion) Documentation() (activity string, det
 }`
 }
 
+type ActivityTypeEnabledMacosUpdateNewHosts struct {
+	TeamID   *uint   `json:"team_id"`
+	TeamName *string `json:"team_name"`
+}
+
+func (a ActivityTypeEnabledMacosUpdateNewHosts) ActivityName() string {
+	return "enabled_macos_update_new_hosts"
+}
+
+func (a ActivityTypeEnabledMacosUpdateNewHosts) Documentation() (activity string, details string, detailsExample string) {
+	return `Generated when a user turns on updates during macOS Setup Assistant for hosts that automatically enroll (ADE).`,
+		`This activity contains the following fields:
+- "team_id": The ID of the team that the setting applies to, ` + "`null`" + ` if it applies to devices that are not in a team.
+- "team_name": The name of the team that the setting applies to, ` + "`null`" + ` if it applies to devices that are not in a team.`, `{
+  "team_id": 123,
+  "team_name": "Workstations"
+}`
+}
+
+type ActivityTypeDisabledMacosUpdateNewHosts struct {
+	TeamID   *uint   `json:"team_id"`
+	TeamName *string `json:"team_name"`
+}
+
+func (a ActivityTypeDisabledMacosUpdateNewHosts) ActivityName() string {
+	return "disabled_macos_update_new_hosts"
+}
+
+func (a ActivityTypeDisabledMacosUpdateNewHosts) Documentation() (activity string, details string, detailsExample string) {
+	return `Generated when a user turns off updates during macOS Setup Assistant for hosts that automatically enroll (ADE).`,
+		`This activity contains the following fields:
+- "team_id": The ID of the team that the setting applies to, ` + "`null`" + ` if it applies to devices that are not in a team.
+- "team_name": The name of the team that the setting applies to, ` + "`null`" + ` if it applies to devices that are not in a team.`, `{
+  "team_id": 123,
+  "team_name": "Workstations"
+}`
+}
+
 type ActivityTypeEditedWindowsUpdates struct {
 	TeamID          *uint   `json:"team_id"`
 	TeamName        *string `json:"team_name"`