refactor: fix help section background in dark mode (#28406)

diff --git a/erpnext/accounts/doctype/accounting_dimension_filter/accounting_dimension_filter.js b/erpnext/accounts/doctype/accounting_dimension_filter/accounting_dimension_filter.js
index 9dd882a..750e129 100644
--- a/erpnext/accounts/doctype/accounting_dimension_filter/accounting_dimension_filter.js
+++ b/erpnext/accounts/doctype/accounting_dimension_filter/accounting_dimension_filter.js
@@ -8,7 +8,7 @@
 		}
 
 		let help_content =
-			`<table class="table table-bordered" style="background-color: #f9f9f9;">
+			`<table class="table table-bordered" style="background-color: var(--scrollbar-track-color);">
 				<tr><td>
 					<p>
 						<i class="fa fa-hand-right"></i>
diff --git a/erpnext/accounts/doctype/loyalty_program/loyalty_program.js b/erpnext/accounts/doctype/loyalty_program/loyalty_program.js
index f90f867..6951b2a 100644
--- a/erpnext/accounts/doctype/loyalty_program/loyalty_program.js
+++ b/erpnext/accounts/doctype/loyalty_program/loyalty_program.js
@@ -6,7 +6,7 @@
 frappe.ui.form.on('Loyalty Program', {
 	setup: function(frm) {
 		var help_content =
-			`<table class="table table-bordered" style="background-color: #f9f9f9;">
+			`<table class="table table-bordered" style="background-color: var(--scrollbar-track-color);">
 				<tr><td>
 					<h4>
 						<i class="fa fa-hand-right"></i>
diff --git a/erpnext/accounts/doctype/pricing_rule/pricing_rule.js b/erpnext/accounts/doctype/pricing_rule/pricing_rule.js
index d79ad5f..8267582 100644
--- a/erpnext/accounts/doctype/pricing_rule/pricing_rule.js
+++ b/erpnext/accounts/doctype/pricing_rule/pricing_rule.js
@@ -38,7 +38,7 @@
 
 	refresh: function(frm) {
 		var help_content =
-			`<table class="table table-bordered" style="background-color: #f9f9f9;">
+			`<table class="table table-bordered" style="background-color: var(--scrollbar-track-color);">
 				<tr><td>
 					<h4>
 						<i class="fa fa-hand-right"></i>
diff --git a/erpnext/manufacturing/doctype/production_plan/production_plan.js b/erpnext/manufacturing/doctype/production_plan/production_plan.js
index 2bd02da..b171086 100644
--- a/erpnext/manufacturing/doctype/production_plan/production_plan.js
+++ b/erpnext/manufacturing/doctype/production_plan/production_plan.js
@@ -105,7 +105,7 @@
 		}
 		frm.trigger("material_requirement");
 
-		const projected_qty_formula = ` <table class="table table-bordered" style="background-color: #f9f9f9;">
+		const projected_qty_formula = ` <table class="table table-bordered" style="background-color: var(--scrollbar-track-color);">
 			<tr><td style="padding-left:25px">
 				<div>
 				<h3 style="text-decoration: underline;">
diff --git a/erpnext/stock/doctype/landed_cost_voucher/landed_cost_voucher.js b/erpnext/stock/doctype/landed_cost_voucher/landed_cost_voucher.js
index 433f78a..9c1a809 100644
--- a/erpnext/stock/doctype/landed_cost_voucher/landed_cost_voucher.js
+++ b/erpnext/stock/doctype/landed_cost_voucher/landed_cost_voucher.js
@@ -35,7 +35,7 @@
 	refresh() {
 		var help_content =
 			`<br><br>
-			<table class="table table-bordered" style="background-color: #f9f9f9;">
+			<table class="table table-bordered" style="background-color: var(--scrollbar-track-color);">
 				<tr><td>
 					<h4>
 						<i class="fa fa-hand-right"></i>