Add Msteams: { Width: 'full' } to Textblock to support adaptive card …

…full width

Signed-off-by: Dima Xu <[email protected]>

notify/msteamsv2/msteamsv2.go

@@ -51,10 +51,11 @@ type Notifier struct {
 
 // https://learn.microsoft.com/en-us/connectors/teams/?tabs=text1#adaptivecarditemschema
 type Content struct {
-	Schema  string `json:"$schema"`
-	Type    string `json:"type"`
-	Version string `json:"version"`
-	Body    []Body `json:"body"`
+	Schema  string  `json:"$schema"`
+	Type    string  `json:"type"`
+	Version string  `json:"version"`
+	Body    []Body  `json:"body"`
+	Msteams Msteams `json:"msteams,omitempty"`
 }
 
 type Body struct {
@@ -67,6 +68,10 @@ type Body struct {
 	Color  string `json:"color,omitempty"`
 }
 
+type Msteams struct {
+	Width string `json:"width"`
+}
+
 type Attachment struct {
 	ContentType string  `json:"contentType"`
 	ContentURL  *string `json:"contentUrl"` // Use a pointer to handle null values
@@ -167,6 +172,9 @@ func (n *Notifier) Notify(ctx context.Context, as ...*types.Alert) (bool, error)
 							Text: text,
 						},
 					},
+					Msteams: Msteams{
+						Width: "full",
+					},
 				},
 			},
 		},