bug: Query Reports fail to load due to frappe.breadcrumbs.update error

[vaishalisahni]

Description:
When opening Query Reports in Frappe v15, the console shows the following error:

Uncaught TypeError: Cannot read properties of undefined (reading 'HR')
    at frappe.breadcrumbs.update
    at Object.add
    at QueryReport.set_breadcrumbs
    at QueryReport.setup_page_head

Steps to Reproduce:

1. Go to any Query Report in Frappe v15 (e.g., HR Reports).
2. Open the report.
3. Observe the console error and that the report is not displayed properly.

Expected Behavior:
Query Reports should display normally, and breadcrumbs should render without errors.

Actual Behavior:
The report fails to display due to the TypeError, caused by frappe.breadcrumbs.update trying to read this.all[page] which is undefined for Query Reports.

Additional Info / Console Log:

Uncaught TypeError: Cannot read properties of undefined (reading 'HR')
    at frappe.breadcrumbs.update
    at Object.add
    at QueryReport.set_breadcrumbs
    at QueryReport.setup_page_head

[vaishalisahni]

@dhwani-ankit @bhushan-barbuddhe I have implemented a fix for this issue: https://github.com/vaishalisahni/frappe_desk_theme
I’ve raised a PR for the same — please take a look: #10