fix(http): stop surfacing background/enrichment-fetch failures as error toasts

Two related cases where ErrorHandlerInterceptor's global toast fired even
though the calling component already recovers gracefully on its own:

- GET /kyc/risk-rules 404ing (e.g. not yet deployed on a given backend)
  popped a raw "Http failure response ... 404" toast on the Create Client
  page, even though client-general-step already falls back to an empty
  rule set and a default risk category when this call fails.

- The Clients list page fires several per-row background calls
  (client data/KYC/address, for every visible row) plus the main search —
  each already had its own catchError/error handling, but the
  interceptor's 500 branch had no silencing path at all (only 403/404 did,
  and only for a fixed set of known-optional URLs), so any backend
  hiccup there spammed "Internal Server Error" toasts on top of an
  otherwise-working page.

Added a SILENT_HTTP_ERROR HttpContextToken so a caller can opt a specific
request out of the toast for every status code (not just 403/404) when it
already handles failure itself — threaded as an optional `silent` param
through ClientsService's searchByText/getClientData/getClientKyc/
getClientAddressData (default false, so no other of their ~50+ call sites
change behavior) and set from ClientsComponent's list-page calls. The
risk-rules endpoint was simpler: just added to the interceptor's existing
URL-based silent-request list alongside client images/KYC/pending-edits.

src/app/clients/clients.component.ts

@@ -137,7 +137,16 @@ export class ClientsComponent implements OnInit {
   private getClients() {
     this.isLoading = true;
     this.clientService
-      .searchByText(this.filterText, this.currentPage, this.pageSize, this.sortAttribute, this.sortDirection)
+      .searchByText(
+        this.filterText,
+        this.currentPage,
+        this.pageSize,
+        this.sortAttribute,
+        this.sortDirection,
+        false,
+        '',
+        true
+      )
       .subscribe(
         (data: any) => {
           this.allRows = data.content || [];
@@ -166,7 +175,7 @@ export class ClientsComponent implements OnInit {
     // Use individual subscriptions instead of forkJoin to avoid EMPTY observable issues
     clients.forEach((client, i) => {
       this.clientService
-        .getClientData(client.id?.toString())
+        .getClientData(client.id?.toString(), true)
         .pipe(catchError(() => of(null)))
         .subscribe((data: any) => {
           if (data?.legalForm) {
@@ -176,7 +185,7 @@ export class ClientsComponent implements OnInit {
         });
 
       this.clientService
-        .getClientKyc(client.id?.toString())
+        .getClientKyc(client.id?.toString(), true)
         .pipe(catchError(() => of(null)))
         .subscribe((kyc: any) => {
           if (kyc) {
@@ -188,7 +197,7 @@ export class ClientsComponent implements OnInit {
         });
 
       this.clientService
-        .getClientAddressData(client.id?.toString())
+        .getClientAddressData(client.id?.toString(), true)
         .pipe(catchError(() => of(null)))
         .subscribe((addr: any) => {
           if (addr && Array.isArray(addr) && addr.length > 0) {