fix: missing file for m365 step after pipe transfer (#854)

## Problem

Missing file error is not caught properly after pipe is transferred,
this occurs if the m365 excel file is not manually transferred from the
old owner to the new owner (and the new owner clicks on pipe transfer
settings)

## Solution

Catch the error and warn with the logger + return instructions for
missing file

## Tests
- Check that after pipe transfer, new owner clicks into the settings and
no error shows anymore (instead the instruction shows)
<img width="586" alt="image"
src="https://github.com/user-attachments/assets/5a3cb65a-7c08-432e-b1fa-847297a34c29"
/>

Author: m0nggh

packages/backend/src/apps/m365-excel/common/get-transfer-details.ts

@@ -1,7 +1,10 @@
 import { IGlobalVariable, ITransferDetails } from '@plumber/types'
 
+import get from 'lodash.get'
+
 import { getM365TenantInfo } from '@/config/app-env-vars/m365'
 import { getEmptyConnectionDetails } from '@/helpers/get-default-transfer-details'
+import logger from '@/helpers/logger'
 
 import { AuthData } from './auth-data'
 
@@ -41,22 +44,38 @@ async function getTransferDetails(
 
   // TODO (mal/WL): query takes around 0.5s, build cache if necessary
   const tenant = getM365TenantInfo(authData.tenantKey)
-  const results = await $.http.get<{ name: string }>(
-    `/v1.0/sites/${tenant.sharePointSiteId}/drive/items/${fileId}?$select=name`,
-  )
-
-  if (!results.data.name) {
+  try {
+    const results = await $.http.get<{ name: string }>(
+      `/v1.0/sites/${tenant.sharePointSiteId}/drive/items/${fileId}?$select=name`,
+    )
     return {
       position: $.step.position,
       appName: $.app.name,
-      instructions: 'No M365 file is found',
+      connectionName: results.data.name,
+    }
+  } catch (error) {
+    const errorCode = get(error, 'details.error.code', '')
+    logger.warn('Error with M365 excel before pipe transfer', {
+      event: 'm365-excel-pipe-transfer',
+      errorCode,
+      error,
+      flowId: $.flow.id,
+      stepId: $.step.id,
+    })
+
+    if (errorCode === 'itemNotFound') {
+      return {
+        position: $.step.position,
+        appName: $.app.name,
+        instructions: 'M365 file cannot be found in your folder',
+      }
     }
-  }
 
-  return {
-    position: $.step.position,
-    appName: $.app.name,
-    connectionName: results.data.name,
+    return {
+      position: $.step.position,
+      appName: $.app.name,
+      instructions: 'Unknown error with M365 excel',
+    }
   }
 }